condition	mean	min	max
0 h after light	18.665599999999998	17.9381	19.3931
4 h after light	17.32965	16.9825	17.6768
8 h after light	12.18235	10.2369	14.1278
4 h after dark	18.0842	14.9695	21.1989
8 h after dark	19.1231	18.0624	20.1838
12 h after dark	22.89685	21.9716	23.8221