condition	mean	min	max
0 h after light	17.87075	17.444	18.2975
4 h after light	11.050049999999999	10.7691	11.331
8 h after light	10.506	10.2534	10.7586
4 h after dark	18.32825	17.8377	18.8188
8 h after dark	15.6747	14.5734	16.776
12 h after dark	15.914349999999999	15.6378	16.1909