Walker Road Manchester

61 addresses across 3 postcodes (M9), about 430 m (0.3 miles) long, classed as a local road. USRN 24507506.

  • Sales: 45 recorded sales since 1995; in 2025 the median was £239,000 across 4 sales.
  • Energy: 36 homes have an energy certificate (B: 4, C: 9, D: 20, E: 3).
  • Flood: No address on its postcodes is in an area at high or medium risk of flooding from rivers, the sea or surface water.
  • Council tax: Most homes around it are in council tax band A; Band D in Manchester costs £2,312 a year in 2026-27.
  • Broadband: Gigabit broadband is available to 71% to 100% of premises.
  • Transport: The nearest railway station is Moston, about 2.7 km (1.7 miles) away in a straight line.
  • Green space: The nearest park or garden, Alkrington Woods, is about 690 m (0.4 miles) away.
  • Air: Background air pollution in 2024 was 14.5 µg/m³ of nitrogen dioxide and 7.8 of PM2.5, within UK legal limits.
  • Height: Its addresses are 99 to 101 m above sea level.
  • Noise: 13 of its 61 addresses are modelled at 55 dB or more from road traffic.
  • Doctors: The nearest GP surgery is The Avenue Medical Centre, about 210 m away, with 4 practices within 1.6 km (1 mile).
  • People: About 780 people lived in the census areas around it in 2021; 38% of households owned their home and 28% of adults held a degree or other higher qualification.

Sales on this street

Source: HM Land Registry Price Paid Data, sales registered up to 28 August 2026, loaded 28 October 2026. Sales reach the register two weeks to two months after completion, so the last two months are incomplete. Matched by postcode and street name.

Sales by year (standard sales only; repossessions and buy-to-let transfers excluded)
YearSalesMedian priceLowestHighest
20254£239,000£145,000£355,000
20241£230,000£230,000£230,000
20221£155,000£155,000£155,000
20211£186,000£186,000£186,000
20174£107,475£92,000£135,000
20151£105,000£105,000£105,000
20131£75,000£75,000£75,000
20111£80,000£80,000£80,000
20101£82,450£82,450£82,450
20091£72,000£72,000£72,000
20074£109,225£101,000£119,000
20054£63,225£45,000£79,950
Most recent sales (45)
DateAddressTypePriceNotes
24 Nov 202550 M9 6RFSemi-detached£270,000
9 Sep 202536 M9 6RFSemi-detached£145,000
6 Aug 20257 M9 6RESemi-detached£355,000
24 Mar 202532 M9 6RFSemi-detached£208,000
30 Aug 202453 M9 6RESemi-detached£230,000
28 Mar 20241 M9 6RESemi-detached£360,000Not a standard sale (repossession, buy-to-let or transfer).
24 Oct 20233 M9 6RESemi-detached£360,000Not a standard sale (repossession, buy-to-let or transfer).
28 Apr 202336 M9 6RFSemi-detached£126,000Not a standard sale (repossession, buy-to-let or transfer).
28 Feb 202213 M9 6RESemi-detached£155,000
18 Aug 20211 M9 6REOther£110,000Not a standard sale (repossession, buy-to-let or transfer).
11 Feb 202144 M9 6RFSemi-detached£186,000
11 Dec 201746 M9 6RFSemi-detached£120,000
6 Oct 201719 M9 6RESemi-detached£135,000
27 Apr 201753 M9 6RESemi-detached£94,950
1 Feb 201750 M9 6RFSemi-detached£92,000
21 Aug 201529 M9 6RESemi-detached£105,000
9 Dec 201346 M9 6RFSemi-detached£75,000
20 Dec 201144 M9 6RFSemi-detached£80,000
19 Jul 201046 M9 6RFSemi-detached£82,450
3 Apr 200950 M9 6RFSemi-detached£72,000
24 Sep 200724 M9 6RFSemi-detached£112,500
20 Jul 200720 M9 6RFSemi-detached£119,000
1 Jun 200718 M9 6RFSemi-detached£101,000
30 Mar 200722 M9 6RFSemi-detached£105,950
5 Jul 200520 M9 6RFSemi-detached£46,500
3 Jun 200549 M9 6RESemi-detached£79,950
20 May 200519 M9 6RESemi-detached£45,000
9 May 200529 M9 6RESemi-detached£79,950
7 Apr 200420 M9 6RFSemi-detached£45,000
18 Mar 200418 M9 6RFSemi-detached£45,000
12 Mar 200424 M9 6RFSemi-detached£45,000
12 Mar 200422 M9 6RFSemi-detached£45,000
4 Aug 200325 M9 6RESemi-detached£44,000
5 Aug 200220 M9 6RFSemi-detached£14,000
5 Aug 200218 M9 6RFSemi-detached£14,000
5 Aug 200222 M9 6RFSemi-detached£10,000
15 Aug 200136 M9 6RFSemi-detached£12,000
1 Jun 200119 M9 6RESemi-detached£11,000
19 Apr 200126 M9 6RFTerraced£19,000
28 Jan 200113 M9 6RESemi-detached£14,300
9 Apr 199836 M9 6RFSemi-detached£26,000
18 Aug 199720 M9 6RFSemi-detached£12,000
18 Aug 199722 M9 6RFSemi-detached£12,000
18 Aug 199718 M9 6RFSemi-detached£9,000
31 Oct 199536 M9 6RFSemi-detached£26,000

Energy performance certificates

Source: Energy Performance of Buildings Register (MHCLG), register as at 1 November 2026. Latest certificate per address; certificates last ten years, so the oldest here dates from December 2009 and some homes have none. Address data © Ordnance Survey and Royal Mail, shown for understanding the energy efficiency of buildings only.

36 homes with a current certificate; median floor area 99 m². Most common: House, semi-detached (36). Built: 1900-1929 (14); 1950-1966 (10); 1930-1949 (8). Tenure at assessment: rented (social) (16); owner-occupied (8); rented (private) (4).

Each home's certificates and sales (17 addresses)

Council tax

What each band costs in Manchester in 2026-27: Band D £2,312 a year on average, including the police, fire and any county and parish charges.

ABCDEFGH
£1,541£1,798£2,055£2,312£2,826£3,340£3,853£4,624

Homes by band in the neighbourhood around this street: most are in band A (88% of about 690 homes).

Sources: Valuation Office Agency, Council Tax: stock of properties, homes at 31 March 2026 (counts rounded to the nearest 10; some small counts withheld), for the neighbourhood (census area of about 700 homes) around it, not just this street; Ministry of Housing, Communities and Local Government, council tax levels 2026-27. Bands are charged as fixed shares of Band D; the actual bill depends on the parish and on discounts such as the single-person discount. Check a home's own band with the official council tax band checker.

Planning and heritage

  • Conservation area: no postcode centre in this street's postcodes is in one.
  • Listed buildings on or by this street: none.
  • Article 4 direction (removing permitted development rights): none recorded, though not every council has published theirs.
  • Tree preservation orders: none recorded, though not every council has published theirs.
  • Green belt: no.

Brownfield land registered for housing within 1 km (0.6 miles)

Source: planning.data.gov.uk (Ministry of Housing, Communities and Local Government), compiled from councils and, for listed buildings, Historic England's National Heritage List. Conservation areas, Article 4 directions, tree preservation areas and the green belt are checked at each postcode's centre. Listed buildings and protected trees are counted on or by this street. Councils publish Article 4 directions, tree preservation orders and brownfield registers to different standards, and some not yet. Planning applications are not here: there is no national open record of them yet.

Roadworks

No street works under way, planned or finished in the last three months on this street, in permits up to 31 October 2026.

Source: Department for Transport, Street Manager open data, permits and works up to 31 October 2026. It is published once a month, so works arranged or started since then are not shown, and dates are the ones planned unless the works have started or finished. Emergency works are often permitted after they begin.

Flood risk

Rivers, the sea or surface water: in this street's postcodes, 0 addresses are in areas at high risk, 0 at medium risk and 1 at low risk. Each address counts once, at the higher of its rivers-and-sea and surface-water risk.

Rivers and the sea alone: no home is in an area at risk.

High: 3.3% (1 in 30) or more chance of flooding a year. Medium: 1% to 3.3%. Low: 0.1% to 1%. Very low: under 0.1%. The rivers and sea figures allow for flood defences. Counts cover whole postcodes, which can include other streets.

Flood zone for planning: no postcode centre on this street is in flood zone 2 or 3.

PostcodePlanning zoneAddresses at high / medium / low riskGroundwater
M9 6REnot in 2 or 3 0 / 0 / 1 unlikely
M9 6RFnot in 2 or 3 0 / 0 / 0 unlikely
M9 6RAnot in 2 or 3 0 / 0 / 0 unlikely

Sources: Environment Agency Flood risk: postcode search tool data (loaded 29 October 2026), Risk of Flooding from Rivers and Sea: postcodes in areas at risk (loaded 29 October 2026) and Flood Map for Planning (loaded 28 October 2026). Flood zones are checked at each postcode's centre point. These are models of areas, which their publishers say are not suitable for showing whether an individual property is at risk, and they do not cover flooding from sewers or drains. Check an address on the official long-term flood risk service.

© Environment Agency copyright and/or database right 2026. All rights reserved. Some features are based on digital spatial data from the Centre for Ecology & Hydrology, © NERC (CEH); the postcode data is produced in part from PAF® and Multiple Residence Data, © Royal Mail Group Limited.

Height above sea level

The street's 61 addresses are between 99 m and 101 m above sea level (100 m on average).

Source: Ordnance Survey, OS Terrain 50, July 2026: the height of the ground on a 50 m grid, read at each address, in metres above Ordnance Datum (mean sea level at Newlyn). It is the lie of the land, not floor or threshold levels, and is accurate to a few metres. Being low-lying is not in itself a flood risk; the flood section above says what the flood maps show.

Broadband

Source: Ofcom Connected Nations, data as at January 2026. Percentages are of premises in each postcode that can get the service, not take-up or speed achieved.

Availability by postcode (% of premises)
PostcodeSuperfast (30 Mbit/s+)Ultrafast (300 Mbit/s+)GigabitBelow 10 Mbit/s
M9 6RA100%100%71%0%
M9 6RE100%100%100%0%
M9 6RF100%100%100%0%

Getting around

Sources: Department for Transport, NaPTAN (every public transport stop), as at 31 October 2026; Office of Rail and Road, Estimates of station usage 2024–25 (which stations are on the National Rail network, and their journeys: entries and exits in the year to March); OurAirports (public domain, kept by volunteers); car parks and charging points from Overture Maps Foundation, release 2026-10-21.0, which gathers business listings from Meta, Microsoft, Foursquare and others: not an official register, so some will be missing, private or out of date. Distances are straight lines from the middle of the street, not routes, and say nothing about how often anything runs. Stations opened since the end of ORR's year appear when ORR publishes the next one, each December; heritage railways are left out.

NearestDistance
Railway stationsMoston 106,000 journeys in 2024–252.7 km (1.7 miles)
Mills Hill (Manchester) 304,000 journeys in 2024–253.4 km (2.1 miles)
Manchester Victoria 8.4 million journeys in 2024–255.4 km (3.3 miles)
Bus stops9 stops within 400 m (0.2 miles), 41 within 800 m (0.5 miles); nearest Victoria Avenue Higher Blackley80 m
Bus or coach stationMiddleton Bus Station1.9 km (1.2 miles)
Car parksOld Market Street Car Park1.3 km (0.8 miles)
EV charging pointsBe.EV Charging Station1.9 km (1.2 miles)
Airport with scheduled flightsManchester Airport MAN20.8 km (13 miles)

Local services

Sources: NHS Organisation Data Service, as at 31 October 2026: GP practices, community pharmacies and dental practices with an NHS contract, open now, each placed at the centre of its postcode; hospitals are NHS trust and Welsh health board sites named as hospitals, and may not have an emergency department. Police stations and cash machines from Overture Maps Foundation, release 2026-10-21.0, which gathers business listings: not an official register, so some will be missing or out of date. Distances are straight lines from the middle of the street. Nothing here says whether a practice is taking new patients or a dentist new NHS patients.

NearestDistance
GP surgeries4 practices within 1.6 km (1 mile); nearest The Avenue Medical Centre210 m
Pharmacies8 pharmacies within 1.6 km (1 mile); nearest Prescriptions Direct100 m
NHS dentists5 practices within 1.6 km (1 mile); nearest Dental Surgery140 m
HospitalNorth Manchester General Hospital2 km (1.2 miles)
Police stationPlant Hill Police Station200 m
Cash machines2 machines within 800 m (0.5 miles); nearest ATM120 m

Parks and green space

Source: Ordnance Survey, OS Open Greenspace, April 2026: public parks and gardens, play spaces, playing fields and allotments, with their entrances. Distances are straight lines from the middle of the street to a site's nearest entrance (or its edge where none is recorded), not walking routes; sizes are the area OS maps for each site. Some sites, such as school playing fields, may not be open to the public.

NearestDistance
Park or garden1 within 800 m (0.5 miles); nearest Alkrington Woods 68 ha690 m (0.4 miles)
Play area4 within 800 m (0.5 miles); nearest Unnamed 680 m²470 m (0.3 miles)
Playing field3 within 800 m (0.5 miles); nearest Plant Hill Park 6.7 ha470 m (0.3 miles)
Allotments1 within 800 m (0.5 miles); nearest Unnamed 2.1 ha780 m (0.5 miles)

Within 800 m (0.5 miles): 1 park or garden, 68 hectares in all.

Landmarks

The nearest historic landmark is Manchester General Cemetery, a registered park or garden (Grade II), 2.9 km (1.8 miles) south.

Historic places
NameWhat it isFrom the middle of the street
Manchester General CemeteryRegistered park or garden, Grade II2.9 km (1.8 miles) south
Heaton ParkRegistered park or garden, Grade II3 km (1.9 miles) west
Natural landmarks within 5 km (3.1 miles)
NameWhat it isFrom the middle of the street
Bailey's WoodWood840 m (0.5 miles) south-east
Alkrington WoodWood1.2 km (0.7 miles) north
Oliver CloughValley1.2 km (0.8 miles) south
Boggart Hole CloughValley1.5 km (0.9 miles) south
Frank's DamLake or reservoir1.9 km (1.2 miles) north
Oak Croft HillHill2.7 km (1.7 miles) north-west

Sources: Historic England's registers through planning.data.gov.uk (MHCLG), and Cadw through DataMapWales (Welsh Government): World Heritage Sites within 10 km (6.2 miles), battlefields within 5 km (3.1 miles), registered parks and gardens within 3 km (1.9 miles), scheduled monuments within 2 km (1.2 miles), and Grade I and II* listed buildings within 1 km (0.6 miles). Ordnance Survey, OS Open Names, October 2026: named hills, valleys, lakes, woods, wetlands and coast (it has no rivers). Distances are in a straight line to the middle of each site, and being on a register does not mean there is public access.

Air quality

Source: Defra, modelled background air pollution, annual means for 2024, for the 1 km square that holds the middle of the street. These are background levels, away from the kerb: beside a busy road nitrogen dioxide in particular can be several times higher. UK limits are the legal annual limits for England and Wales; the World Health Organization's 2021 guidelines are much stricter, and most towns and cities are above them.

Annual means in µg/m³ (micrograms per cubic metre of air)
PollutantHereUK limitWHO guideline
Nitrogen dioxide (NO2)14.54010
Fine particles (PM2.5)7.8205
Particles (PM10)12.44015

All three are within the UK legal limits; nitrogen dioxide and PM2.5 are above the WHO guideline, as in most towns and cities.

Road and rail noise

Source: Defra, strategic noise mapping Round 4 (England), modelled for 2021 and published in December 2023, and its airport maps of the same round for the fifteen largest English airports, published in April 2026: Lden, the average sound level over a whole day with extra weight for the evening and night, on a 10 m grid, read at each address. These are models of traffic, not measurements; they leave out smaller airports and airfields, industry and neighbours, and a room at the back of a house is often much quieter than the front. The World Health Organization's guidelines are 53 dB for road traffic, 54 dB for railways and 45 dB for aircraft (below the lowest level shown here).

Addresses by modelled noise level (Lden, dB)
LevelRoad trafficRailways
60 to 6460
55 to 5970
Under 554861

13 of the street's 61 addresses are modelled at 55 dB or more from road traffic, above the WHO guidelines.

Climate, daylight and earthquakes

Monthly temperatures and rainfall, sunrise and sunset through the year, and earthquakes recorded nearby since 1970 are much the same across the area, so they are worked out once for Manchester: see them on the Manchester page.

Nearest schools

Source: Get Information About Schools (Department for Education), 3 November 2026; Ofsted monthly management information as at September 2026. Distances are straight lines from the middle of the street to the school; catchments and admissions are not shown. Since November 2025 Ofsted gives report-card grades by area, not one overall grade; older grades stand until a school is re-inspected.

SchoolPhaseAgesDistanceInspection
E-ACT Blackley AcademyPrimary3–11390 m Good (Mar 2024, overall grade under the previous framework)
Our Lady's RC High School Roman CatholicSecondary11–16800 m (0.5 miles) Report card (Nov 2025): Curriculum and teaching: Strong standard; Achievement: Strong standard; Attendance and behaviour: Strong standard; Personal development and wellbeing: Strong standard; Inclusion: Strong standard; Leadership and governance: Strong standard; Safeguarding standards: Met
Co-op Academy ManchesterSecondary11–16830 m (0.5 miles) No published inspection
Crosslee Community Primary SchoolPrimary3–11860 m (0.5 miles) Report card (May 2026): Curriculum and teaching: Expected standard; Achievement: Needs attention; Attendance and behaviour: Needs attention; Personal development and wellbeing: Expected standard; Inclusion: Expected standard; Leadership and governance: Expected standard; Early years: Expected standard; Safeguarding standards: Met
St Clare's RC Primary School Roman CatholicPrimary3–111 km (0.6 miles) No published inspection
St John Bosco RC Primary School, a Voluntary Academy Roman CatholicPrimary3–111 km (0.6 miles) Requires improvement (Mar 2024, overall grade under the previous framework)
St Michael's Church of England Primary School, AlkringtonPrimary4–111 km (0.6 miles) No overall grade (Oct 2024, graded inspection without an overall judgement): Quality of education: Good; Behaviour and attitudes: Good; Personal development: Good; Leadership and management: Good
St Thomas More Roman Catholic Primary School, Middleton, RochdalePrimary3–111.2 km (0.8 miles) No overall grade (Oct 2024, graded inspection without an overall judgement): Quality of education: Good; Behaviour and attitudes: Good; Personal development: Good; Leadership and management: Good
Alkrington Primary SchoolPrimary2–111.3 km (0.8 miles) No published inspection
Pike Fold Primary SchoolPrimary3–111.3 km (0.8 miles) No published inspection
Mount Carmel RC Primary School, a Voluntary Academy Roman CatholicPrimary3–111.4 km (0.9 miles) No overall grade (Nov 2024, graded inspection without an overall judgement): Quality of education: Outstanding; Behaviour and attitudes: Outstanding; Personal development: Outstanding; Leadership and management: Outstanding
Crab Lane Primary SchoolPrimary3–111.5 km (0.9 miles) No overall grade (Oct 2024, graded inspection without an overall judgement): Quality of education: Good; Behaviour and attitudes: Good; Personal development: Good; Leadership and management: Good

Food hygiene ratings nearby

Source: Food Standards Agency, Food Hygiene Rating Scheme, extract of 3 November 2026. Each rating is shown with the date it was given; a business may have been re-inspected since the extract. Within 500 m (0.3 miles) of the middle of the street.

BusinessTypeDistanceRatingRated
Humans MCR M9 6FQOther catering premises100 m5 Very good25 Jan 2022
Spicy Chef also T/as Blackley Burgers & Shakes and King Pizza M9 6FQTakeaway/sandwich shop100 m2 Improvement necessary15 Dec 2025
Baytree Restaurant M9 6FQRestaurant/Cafe/Canteen100 m3 Generally satisfactory7 Jun 2024
Sugar on top M9 6FQTakeaway/sandwich shop100 mAwaiting inspection
IGN Catering M9 6ERRetailers - other100 m5 Very good6 Dec 2022
Ged's Butchers M9 6ERRetailers - other100 m5 Very good6 Nov 2022
Rock of Zion community Group M9 6RAOther catering premises120 m4 Good19 Mar 2025
Wellmindz M9 6RARetailers - other120 mAwaiting inspection
Kay's Kitchen M9 6ERTakeaway/sandwich shop130 m4 Good14 Nov 2024
European Mini Market M9 6ERRetailers - other130 m5 Very good15 May 2024
Jade Garden Blackley M9 6ERTakeaway/sandwich shop130 m4 Good11 Aug 2025
Busy Bee Coffee M9 6ERRestaurant/Cafe/Canteen130 m5 Very good30 Sep 2024
Mother Cluckers M9 6ERTakeaway/sandwich shop130 mAwaiting inspection
Victoria Avenue Wines also T/as Lifestyle Express M9 2QLRetailers - other160 m3 Generally satisfactory16 Oct 2023
The Juice garden M9 6QLRestaurant/Cafe/Canteen160 mAwaiting inspection

Crime within 250 m

Source: data.police.uk street-level crime, September 2025 to August 2026. Police forces move every crime to the nearest of about 760,000 anonymised map points before publishing, so these are crimes near this street, not on it, and a busy point can collect crimes from a wider area. Counts are of records, not convictions.

No crimes recorded at anonymised points within 250 m in this period (derbyshire).

People and work

Source: ONS Census 2021, taken on 21 March 2021, for the 2 Output Areas (small census areas of about 125 households each) that this street's postcodes are in: 777 residents in 256 households. The census was taken during a lockdown, so working from home is high and travel to work low compared with now. ONS swaps a few records between neighbouring areas and adds small amounts of noise to counts to protect privacy, so small differences mean little. Industry is not published for areas this small.

Who lives here

Around this streetEngland
Median age3340
Children under 1523%17%
Aged 65 and over8%18%

Homes

Around this streetEngland
Owned (outright or with a mortgage)38%61%
Owned outright15%33%
Shared ownership0%1%
Social rented47%17%
Private rented15%21%

Work and commuting

Around this streetEngland
Adults (16 and over) in work54%57%
Unemployment (of those working or looking for work)8%6%
Retired (of adults)9%22%
Long-term sick or disabled (of adults)8%4%
Work mainly from home (of those in work)17%32%
Travel to work by car or van49%48%
By train, Underground, metro or tramunder 1%4%
By any public transport, including bus18%8%
On foot or by bicycle12%10%
Work within 10 km (6 miles) of home (of those who travel to work)79%65%
Work 30 km (19 miles) or more away5%8%

Education and languages

Around this streetEngland
Degree or other higher qualification, Level 4+ (of adults)28%34%
No qualifications26%18%
Apprenticeship as highest qualification5%5%
Main language English (aged 3 and over)83%91%
Cannot speak English well or at all4%2%

Deprivation

The neighbourhood around this street is in decile 1 of 10 on the English Indices of Deprivation 2025, where 1 is the most deprived tenth of England's 33,755 neighbourhoods and 10 the least.

Source: English Indices of Deprivation 2025 (Ministry of Housing, Communities and Local Government), by LSOA (about 1,500 people), through the ONS Postcode Directory. The index combines income, employment, health, education, crime, housing and living environment; it ranks areas against each other and does not describe any one household. Ranks in England and Wales are worked out separately and cannot be compared.

What has changed

Nothing new since the change feed started on 30 October 2026. New sales and energy certificates, and hygiene ratings, school inspections and flood figures nearby, will be listed here as the sources update.

Everything that has changed on and near this street

Postcodes on this street

Source: ONS Postcode Directory August 2026, ONS UPRN Directory September 2026, OS Open Linked Identifiers September 2026. A postcode can cover more than one street; the share shows how many of its addresses are on this one.

  • M9 6RE: 31 addresses of 32 in the postcode
  • M9 6RF: 29 addresses
  • M9 6RA: 1 address of 22 in the postcode

Nearby streets

Mansfield Road · Erskine Road · Stockdale Road · Bransby Avenue · Mansfield Drive · Bransby Avenue · Floyer Road · Mansfield Avenue · Mortimer Avenue · Dunster Avenue · Coldstream Avenue · Symond Road

All the streets in M9 and across Manchester.

What this page cannot tell you

  • Whether a particular house is at risk of flooding, subsiding or anything else: the flood map is a model of areas and there is no property-level data here.
  • What a home is worth now: sales are historic prices for the homes that happened to sell.
  • How safe the street is: crime points are moved to anonymised locations and many crimes are never reported.
  • Whether you would get a place at a school: distances are straight lines, not catchments.
  • Who lives on the street now: census figures describe the small areas around it in March 2021, during a lockdown.
  • How long a journey takes or how often anything runs: transport distances are straight lines to the nearest stops.
  • Whether a GP practice is taking new patients, or a dentist new NHS patients.
  • How loud a home is inside, or noise from industry, neighbours or smaller airfields: noise figures are models of road, rail and air traffic outside.

How each figure on this page is matched to the street and worked out: methodology.