condition	mean	min	max
0 h after light	19.8241	18.0275	21.6207
4 h after light	11.59565	10.5143	12.677
8 h after light	12.641	11.717	13.565
4 h after dark	16.781750000000002	16.44	17.1235
8 h after dark	14.3224	12.2534	16.3914
12 h after dark	18.3512	14.3039	22.3985