condition	mean	min	max
4 h after light	7.339375	6.51128	8.16747
8 h after light	12.6536	12.243	13.0642
12 h after light	12.220600000000001	10.0899	14.3513
4 h after dark	19.6343	19.1866	20.082
8 h after dark	15.15595	13.9507	16.3612
12 h after dark	13.18425	12.005	14.3635