Holborn View Ripley, Amber Valley

168 addresses across 7 postcodes (DE5), about 680 m (0.4 miles) long, classed as a local road. USRN 600749.

  • Sales: 130 recorded sales since 1995; in 2025 the median was £197,500 across 6 sales.
  • Energy: 110 homes have an energy certificate (A: 1, B: 48, C: 20, D: 31, E: 7, F: 3).
  • Flood: 4 addresses on its postcodes are in areas 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 Amber Valley costs £2,408 a year in 2026-27.
  • Broadband: Gigabit broadband is available to 100% of premises.
  • Transport: The nearest railway station is Langley Mill, about 4.5 km (2.8 miles) away in a straight line.
  • Green space: The nearest park or garden, Pit Top, is about 1 km (0.6 miles) away.
  • Air: Background air pollution in 2024 was 8.9 µg/m³ of nitrogen dioxide and 7.1 of PM2.5, within UK legal limits.
  • Height: Its addresses are 117 to 133 m above sea level.
  • Noise: 11 of its 168 addresses are modelled at 55 dB or more from road traffic.
  • Doctors: The nearest GP surgery is Ivy Grove Surgery, about 1.4 km (0.9 miles) away.
  • People: About 1,070 people lived in the census areas around it in 2021; 83% of households owned their home and 22% of adults held a degree or other higher qualification.
  • Crime: 32 crimes were recorded within 250 m between September 2025 and August 2026, most often violence and sexual offences.

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
20256£197,500£175,000£246,000
20243£180,000£175,000£210,000
20231£190,000£190,000£190,000
20226£191,250£182,000£200,000
20216£182,500£153,000£208,000
20204£160,475£137,000£172,500
20193£163,000£150,000£170,000
20184£152,475£127,000£175,000
20175£141,500£120,000£150,000
20162£151,000£124,000£178,000
20155£124,950£118,000£217,500
20146£124,500£93,000£187,500
Most recent sales (latest 50 of 130)
DateAddressTypePriceNotes
29 Aug 202587 DE5 9RFSemi-detached£180,000
15 Aug 2025101 DE5 9RFDetached£246,000
1 Aug 20259 DE5 9RBSemi-detached£185,000
25 Apr 202531 DE5 9RBSemi-detached£175,000
28 Mar 202560 DE5 9RBSemi-detached£217,000
10 Mar 202588 DE5 9RFSemi-detached£210,000
17 May 202449 DE5 9RBSemi-detached£175,000
5 Apr 202437 DE5 9RBSemi-detached£210,000
26 Jan 202422 DE5 9RBSemi-detached£180,000
4 Dec 202310 DE5 9RBSemi-detached£190,000
2 Dec 20225 DE5 9RBSemi-detached£200,000
15 Nov 202264 DE5 9RBSemi-detached£199,950
6 Sep 202242 DE5 9RBSemi-detached£182,000
20 May 202251 DE5 9RBSemi-detached£187,500
25 Mar 20227 DE5 9RBSemi-detached£195,000
7 Feb 20226 DE5 9RBSemi-detached£182,000
9 Dec 202143 DE5 9RBSemi-detached£190,000
7 Oct 20218 DE5 9RBSemi-detached£162,500
3 Sep 202182 DE5 9RFSemi-detached£169,300Not a standard sale (repossession, buy-to-let or transfer).
23 Apr 202193 DE5 9RFSemi-detached£185,000
30 Mar 202158 DE5 9RBDetached£208,000
15 Mar 202137 DE5 9RBSemi-detached£153,000
29 Jan 202170 DE5 9RBSemi-detached£180,000
4 Dec 202012 DE5 9RBSemi-detached£151,000
4 Dec 202022 DE5 9RBSemi-detached£137,000
12 Nov 202078 DE5 9RFSemi-detached£169,950
19 Jun 202040 DE5 9RBSemi-detached£172,500
2 Aug 20197 DE5 9RBSemi-detached£150,000
5 Jul 201988 DE5 9RFSemi-detached£170,000
24 Jan 201984 DE5 9RFSemi-detached£163,000
31 Aug 201816 DE5 9RBSemi-detached£127,000
10 Aug 20186 DE5 9RBSemi-detached£149,950
31 Jul 201841 DE5 9RBDetached£155,000
13 Apr 2018104 DE5 9RFDetached£175,000
31 Oct 201714 DE5 9RBSemi-detached£120,000
8 Sep 201761 DE5 9RBDetached£127,000
23 May 201751 DE5 9RBSemi-detached£143,000
20 Mar 201743 DE5 9RBSemi-detached£150,000
10 Feb 20177 DE5 9RBSemi-detached£141,500
25 Nov 201616 DE5 9RBSemi-detached£124,000
22 Aug 201696 DE5 9RFSemi-detached£178,000
8 Mar 201655 DE5 9RBSemi-detached£122,500Not a standard sale (repossession, buy-to-let or transfer).
18 Nov 201529 DE5 9RBDetached£217,500
16 Oct 201595 DE5 9RFSemi-detached£120,000
31 Jul 201533 DE5 9RBSemi-detached£145,000
3 Jul 201593 DE5 9RFSemi-detached£118,000
12 Jun 201542 DE5 9RBSemi-detached£124,950
7 Oct 2014114 DE5 9RFDetached£187,500
23 Jul 201417 DE5 9RBSemi-detached£125,000
27 Jun 201467 DE5 9RBSemi-detached£93,000

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 November 2008 and some homes have none. Address data © Ordnance Survey and Royal Mail, shown for understanding the energy efficiency of buildings only.

110 homes with a current certificate; median floor area 82 m². Most common: House, semi-detached (53); House, detached (38); Bungalow, detached (6). Built: 1967-1975 (38); 2019 (19); 2020 (16). Tenure at assessment: owner-occupied (53); rented (private) (6).

Each home's certificates and sales (52 addresses)

Council tax

What each band costs in Amber Valley in 2026-27: Band D £2,408 a year on average, including the police, fire and any county and parish charges.

ABCDEFGH
£1,605£1,873£2,140£2,408£2,943£3,478£4,013£4,815

Homes by band in the neighbourhoods around this street: most are in band A (32% of about 1,710 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 2 neighbourhoods (census areas of about 700 homes each) 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.

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

Finished in the last three months

  • 2 September 2026: SEVERN TRENT WATER, Utility repair and maintenance works, give and take, on the footway (immediate - urgent works)
  • 2 September 2026: SEVERN TRENT WATER, Utility repair and maintenance works, some carriageway incursion, on the footway (minor works)
  • 10 August 2026: SEVERN TRENT WATER, Utility repair and maintenance works, road closure, on the carriageway (major works)
  • 6 August 2026: BT, Utility repair and maintenance works, no carriageway incursion, on the footway (minor works)

Source: Department for Transport, Street Manager open data, permits and works up to 30 September 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, 1 address is in areas at high risk, 3 at medium risk and 21 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
DE5 9RBnot in 2 or 3 1 / 0 / 8 unlikely
DE5 9RFnot in 2 or 3 0 / 3 / 12 unlikely
DE5 9UAnot in 2 or 3 0 / 0 / 1 unlikely
DE5 9THnot in 2 or 3 0 / 0 / 0 unlikely
DE5 9TTnot in 2 or 3 0 / 0 / 0 unlikely
DE5 9TZnot in 2 or 3 0 / 0 / 0 unlikely
DE5 9AEnot 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 168 addresses are between 117 m and 133 m above sea level (124 m on average); the ground rises about 15 m from the lowest to the highest.

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
DE5 9AE100%100%100%0%
DE5 9RB100%100%100%0%
DE5 9RF100%100%100%0%
DE5 9TH100%100%100%0%
DE5 9TT100%100%100%0%
DE5 9TZ100%100%100%0%
DE5 9UA100%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 stationsLangley Mill 100,000 journeys in 2024–254.5 km (2.8 miles)
Alfreton 383,000 journeys in 2024–256.2 km (3.9 miles)
Ambergate 39,000 journeys in 2024–256.8 km (4.2 miles)
Bus stops9 stops within 400 m (0.2 miles), 39 within 800 m (0.5 miles); nearest 93 Holborn View Codnor10 m
Bus or coach stationAlfreton Bus Station5.7 km (3.5 miles)
Car parksChurch Street Car Park1.7 km (1.1 miles)
EV charging pointsbp pulse Charging Station1.8 km (1.1 miles)
Airport with scheduled flightsEast Midlands Airport EMA24.1 km (15 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 surgeries1 practices within 1.6 km (1 mile); nearest Ivy Grove Surgery1.4 km (0.9 miles)
Pharmacies1 pharmacies within 1.6 km (1 mile); nearest Holmfield Chemist LTD470 m (0.3 miles)
NHS dentists1 practices within 1.6 km (1 mile); nearest Nottingham Road Dental Practice1.6 km (1 mile)
HospitalRipley Hospital Utc2 km (1.3 miles)
Police stationDerbyshire Police1.5 km (0.9 miles)
Cash machinesCentral England Co-op - Maple Avenue, Maple Ave1.9 km (1.2 miles)

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 gardenPit Top 21 ha1 km (0.6 miles)
Play area4 within 800 m (0.5 miles); nearest Unnamed 1,880 m²320 m
Playing field3 within 800 m (0.5 miles); nearest Unnamed 3.1 ha340 m
Allotments1 within 800 m (0.5 miles); nearest Codnor Allotment Gardens 4,700 m²630 m (0.4 miles)

Landmarks

The nearest historic landmark is Codnor Castle, a scheduled monument, 1.8 km (1.1 miles) east. 6 listed buildings are within 1 km (0.6 miles).

Historic places
NameWhat it isFrom the middle of the street
Codnor CastleScheduled monument1.8 km (1.1 miles) east
Derwent Valley MillsWorld Heritage Site7.9 km (4.9 miles) west
Natural landmarks within 5 km (3.1 miles)
NameWhat it isFrom the middle of the street
Forty Horse WoodWood820 m (0.5 miles) north
Joy's WoodWood1.1 km (0.7 miles) north-east
Strelley WoodWood1.1 km (0.7 miles) south
Golden ValleyValley1.9 km (1.2 miles) north-east
Loscoe DamLake or reservoir2.2 km (1.4 miles) south-east
Pye HillHill3.5 km (2.1 miles) north-east

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)8.94010
Fine particles (PM2.5)7.1205
Particles (PM10)11.34015

All three are within the UK legal limits; PM2.5 is 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
55 to 59110
Under 55157168

11 of the street's 168 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 Amber Valley: see them on the Amber Valley 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
Codnor Community Primary School Church of England ControlledPrimary3–11350 m Report card (Feb 2026): Curriculum and teaching: Expected standard; Achievement: Expected standard; Attendance and behaviour: Expected standard; Personal development and wellbeing: Expected standard; Inclusion: Needs attention; Leadership and governance: Needs attention; Early years: Needs attention; Safeguarding standards: Met
Waingroves Primary SchoolPrimary4–11490 m (0.3 miles) No published inspection
The Ripley AcademySecondary11–18700 m (0.4 miles) Good (Feb 2020, overall grade under the previous framework)
Ripley St John's Church of England Primary School and NurseryPrimary3–111.1 km (0.7 miles) No published inspection
Ripley Junior SchoolPrimary7–111.9 km (1.2 miles) No published inspection
Ripley Infant SchoolPrimary4–72 km (1.2 miles) Good (Jan 2024, overall grade under the previous framework)

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
The Gate Fryer DE5 3JXTakeaway/sandwich shop300 m4 Good10 Sep 2026
Tesco Express DE5 9QSRetailers - supermarkets/hypermarkets380 m5 Very good25 Nov 2024
Codnor Fish Bar DE5 9QSTakeaway/sandwich shop390 m5 Very good3 Oct 2024
Codnor Park Residential Home DE5 9QTHospitals/Childcare/Caring Premises420 m (0.3 miles)5 Very good8 Apr 2026
Firs Nursing Home DE5 9QTHospitals/Childcare/Caring Premises420 m (0.3 miles)5 Very good25 Aug 2026
Codnor Community Primary School Church Of England Controlled DE5 9QDSchool/college/university420 m (0.3 miles)5 Very good21 Oct 2025
Jeera Restaurant DE5 9QBRestaurant/Cafe/Canteen470 m (0.3 miles)3 Generally satisfactory19 Feb 2026
SMG Convienience Store DE5 9QBRetailers - other470 m (0.3 miles)5 Very good1 Mar 2017
Waingroves Methodist Church DE5 9TBOther catering premises490 m (0.3 miles)5 Very good7 Nov 2023

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.

32 recorded crimes by category
CategoryCrimes
Violence and sexual offences15
Other theft5
Criminal damage and arson3
Anti-social behaviour3
Public order2
Vehicle crime1
Burglary1
Other crime1
Shoplifting1

Most of these are attached to: On or near Lyndale Drive (8); On or near Masters View (5); On or near Brookvale Avenue (5); On or near Hesketh Close (4); On or near Severn Close (2).

People and work

Source: ONS Census 2021, taken on 21 March 2021, for the 3 Output Areas (small census areas of about 125 households each) that this street's postcodes are in: 1,071 residents in 443 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 age4040
Children under 1516%17%
Aged 65 and over19%18%

Homes

Around this streetEngland
Owned (outright or with a mortgage)83%61%
Owned outright44%33%
Shared ownership1%1%
Social rented8%17%
Private rented8%21%

Work and commuting

Around this streetEngland
Adults (16 and over) in work64%57%
Unemployment (of those working or looking for work)3%6%
Retired (of adults)22%22%
Long-term sick or disabled (of adults)3%4%
Work mainly from home (of those in work)12%32%
Travel to work by car or van78%48%
By train, Underground, metro or tram0%4%
By any public transport, including bus3%8%
On foot or by bicycle6%10%
Work within 10 km (6 miles) of home (of those who travel to work)64%65%
Work 30 km (19 miles) or more away6%8%

Education and languages

Around this streetEngland
Degree or other higher qualification, Level 4+ (of adults)22%34%
No qualifications16%18%
Apprenticeship as highest qualification9%5%
Main language English (aged 3 and over)100%91%
Cannot speak English well or at all0%2%

Deprivation

The 2 neighbourhoods around this street are in deciles 6 to 7 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.

  • DE5 9RB: 69 addresses of 72 in the postcode
  • DE5 9RF: 45 addresses of 46 in the postcode
  • DE5 9UA: 17 addresses of 36 in the postcode
  • DE5 9TH: 14 addresses of 23 in the postcode
  • DE5 9TT: 9 addresses of 14 in the postcode
  • DE5 9TZ: 9 addresses of 13 in the postcode
  • DE5 9AE: 5 addresses of 9 in the postcode

Nearby streets

Severn Close · Brookvale Avenue · Hesketh Close · Warren Road · Meadow Avenue · Hardy Crescent · The Orchard · Masters View · Lyndale Drive · Brookfield Close · Wood Street · Smith Avenue

All the streets in DE5 and across Amber Valley.

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.