condition	mean	min	max
4 h after light	8.769480000000001	8.31629	9.22267
8 h after light	10.343025	9.93695	10.7491
12 h after light	15.04025	14.7358	15.3447
4 h after dark	14.955749999999998	14.7648	15.1467
8 h after dark	13.265	12.8698	13.6602
12 h after dark	11.4717	10.7291	12.2143