condition	mean	min	max
0 h after light	7.7184550000000005	7.53237	7.90454
4 h after light	7.24737	7.12815	7.36659
8 h after light	11.7106	11.2536	12.1676
4 h after dark	16.78985	16.5384	17.0413
8 h after dark	11.25	11.2028	11.2972
12 h after dark	7.8435	6.83498	8.85202