condition	mean	min	max
4 h after light	9.60475	9.50719	9.70231
8 h after light	7.997685000000001	7.39008	8.60529
12 h after light	17.4889	17.0585	17.9193
4 h after dark	22.3538	21.7574	22.8875
8 h after dark	16.948733333333333	15.4773	19.113
12 h after dark	12.225566666666667	11.7989	12.7047