condition	mean	min	max
4 h after light	17.52525	15.8645	19.186
8 h after light	13.58825	12.8998	14.2767
12 h after light	17.44725	16.7008	18.1937
4 h after dark	22.517049999999998	20.6911	24.343
8 h after dark	20.84525	20.2835	21.407
12 h after dark	19.24375	18.1924	20.2951