condition	mean	min	max
4 h after light	19.561459499999998	19.112286	20.010633
8 h after light	14.6658455	13.816776	15.514915
12 h after light	16.8660375	13.736188	19.995887
4 h after dark	16.693969000000003	14.728255	18.659683
8 h after dark	20.0398945	19.324872	20.754917
12 h after dark	34.231403	34.231403	34.231403