condition	mean	min	max
4 h after light	18.45775	16.753	20.1625
8 h after light	14.769850000000002	12.7307	16.809
12 h after light	14.26525	14.0419	14.4886
4 h after dark	17.714666666666666	15.3863	19.0444
8 h after dark	22.10343333333333	18.6842	26.502
12 h after dark	21.1891	19.2319	24.8486