condition mean min max 4 h after light 1174.3 1174.3 1174.3 8 h after light 1225.85 1209.5 1242.2 12 h after light 1009.9000000000001 976.9 1042.9 4 h after dark 911.75 819.1 1004.4 8 h after dark 1148.1 1094.4 1201.8 12 h after dark 1143.3 1127.5 1159.1