condition	mean	min	max
4 h after light	15.740367500000001	15.668229	15.812506
8 h after light	13.995778	13.8204	14.171156
12 h after light	12.5957595	12.470736	12.720783
4 h after dark	15.072238500000001	13.930656	16.213821
8 h after dark	14.8687925	14.332645	15.40494
12 h after dark	11.459956	11.459956	11.459956