condition	mean	min	max
4 h after light	8.720596666666667	6.59122	11.272
8 h after light	8.76052	2.76371	15.2986
12 h after light	13.458120000000001	8.21656	18.1658
4 h after dark	19.895833333333332	15.9741	22.5198
8 h after dark	18.8824	14.7873	22.4421
12 h after dark	10.931363333333334	8.13899	13.8939