condition	mean	min	max
4 h after light	21.90465	19.8707	23.9386
8 h after light	8.128464999999998	8.08344	8.17349
12 h after light	6.516265	5.73318	7.29935
4 h after dark	11.817166666666667	10.9629	13.0194
8 h after dark	14.1419	13.794	14.6989
12 h after dark	19.6423	18.2161	21.7521