condition	mean	min	max
0 h after light	6.7847100000000005	6.51936	7.05006
4 h after light	7.61683	7.12921	8.10445
8 h after light	6.87881	5.88844	7.86918
4 h after dark	6.047935	5.88197	6.2139
8 h after dark	6.7946550000000006	6.58736	7.00195
12 h after dark	5.168465	4.33267	6.00426