condition	mean	min	max
4 h after light	17.6214	15.3798	19.863
8 h after light	13.6722	11.1257	16.2187
12 h after light	18.15365	16.9823	19.325
4 h after dark	22.852899999999998	21.8473	23.8585
8 h after dark	20.33495	19.297	21.3729
12 h after dark	22.61835	22.0833	23.1534