condition mean min max 4 h after light 181.6 181.6 181.6 8 h after light 204.6 193.1 216.1 12 h after light 243.8 243.6 244.0 4 h after dark 225.75 197.2 254.3 8 h after dark 201.3 188.5 214.1 12 h after dark 194.7 191.8 197.6