condition	mean	min	max
4 h after light	7.04235	6.78505	7.42005
8 h after light	6.879936666666667	6.678710000000001	7.138780000000001
12 h after light	7.10734	6.72427	7.5887899999999995
4 h after dark	7.15994	7.04318	7.3116
8 h after dark	6.983666666666667	6.695360000000001	7.26697
12 h after dark	7.180956666666667	6.896839999999999	7.69227