condition	mean	min	max
0 h after light	7.5778	7.10821	8.04739
4 h after light	12.539000000000001	11.0592	14.0188
8 h after light	20.2408	18.9893	21.4923
4 h after dark	18.3029	16.7789	19.8269
8 h after dark	12.536750000000001	12.3754	12.6981
12 h after dark	8.116235	7.86375	8.36872