condition mean min max 4 h after light 83.91325 81.2573 86.5692 8 h after light 88.67815 87.4209 89.9354 12 h after light 101.783 100.98 102.586 4 h after dark 99.56195 96.6579 102.466 8 h after dark 93.2255 92.0752 94.3758 12 h after dark 92.0902 91.6318 92.5486