condition mean min max 0 h after light 11.995650000000001 11.2066 12.7847 4 h after light 9.441875 9.37085 9.5129 8 h after light 9.703075 9.50369 9.90246 4 h after dark 15.107099999999999 14.291 15.9232 8 h after dark 12.01615 11.0268 13.0055 12 h after dark 12.17385 11.8321 12.5156