condition mean min max 4 h after light 72.5 72.5 72.5 8 h after light 92.55 72.1 113.0 12 h after light 97.05 93.5 100.6 4 h after dark 153.3 111.2 195.4 8 h after dark 148.8 134.7 162.9 12 h after dark 127.1 123.2 131.0