condition	mean	min	max
4 h after light	9.797930000000001	8.72266	10.8732
8 h after light	12.0687	11.5522	12.5852
12 h after light	15.1365	13.1234	17.1496
4 h after dark	18.654666666666667	18.3808	18.9183
8 h after dark	19.2304	18.0975	19.8263
12 h after dark	14.028233333333334	12.8109	15.8419