condition	mean	min	max
4 h after light	6.73741	6.46986	6.915489999999999
8 h after light	7.190553333333333	7.0311	7.301189999999999
12 h after light	7.305753333333333	7.20255	7.40039
4 h after dark	7.81942	7.73307	7.95653
8 h after dark	7.87148	7.785410000000001	7.94424
12 h after dark	8.056163333333334	7.95189	8.174389999999999