condition	mean	min	max
0 h after light	16.98635	16.8235	17.1492
4 h after light	10.77862	9.60304	11.9542
8 h after light	8.668795	8.24915	9.08844
4 h after dark	15.3201	14.842	15.7982
8 h after dark	10.72406	9.89332	11.5548
12 h after dark	12.0093	10.6111	13.4075