condition mean min max 4 h after light 103.9 103.9 103.9 8 h after light 88.55 71.1 106.0 12 h after light 96.65 96.4 96.9 4 h after dark 80.94999999999999 70.3 91.6 8 h after dark 86.15 72.9 99.4 12 h after dark 95.5 68.3 122.7