condition mean min max 4 h after light 1295.550647 1213.394851 1377.706443 8 h after light 1294.6000319999998 1229.693595 1359.506469 12 h after light 1173.2512335000001 1164.054666 1182.447801 4 h after dark 1058.367359 988.847441 1127.887277 8 h after dark 1113.5156164999999 1041.577343 1185.45389 12 h after dark 911.585889 911.585889 911.585889