Night Light of Purpe (Yamalo-Nenets) from space (Russia) Src. Average luminocity for 10x10km area is 15.1% and for 50x50km: 2.3046%.
Square area 10x10 km:
 3.24%
 2.48%
 0.48%
 2.19%
 1.71%
 1.05%
 1.81%
 0.76%
 0.29%
 19.9%
 66.1%Square area 50x50 km:
 0.48%
 0.49%
 0.11%
 0.21%
 0.21%
 0.17%
 0.25%
 0.12%
 0.18%
 2.31%
 95.47%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
64° 46' 53.5" North, 75° 59' 11.7" East
64° 28' 49" North, 76° 41' 23" East
64° 10' 32.4" North, 77° 23' 34.3" East
Some cities around Purpe sort by population:
• Noyabrsk
		155.7 km =96.7 mi, 
203°
• Novyy Urengoy
		178.3 km =110.8 mi, 
359°
• Muravlenko
		130.1 km =80.8 mi, 
233°
• Gubkinskiy
		10.3 km =6.4 mi, 
240°
• Tarko-Sale
		70.8 km =44 mi, 
46°
• Pangody
		183.8 km =114.2 mi, 
325°
• Urengoy
		182.7 km =113.5 mi, 
25°
• Korotchaevo
		174.1 km =108.2 mi, 
24°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016