condition	mean	min	max
4 h after light	7.778883333333333	7.616739999999999	7.8666
8 h after light	7.543923333333333	7.41304	7.626939999999999
12 h after light	7.860706666666666	7.73485	7.98485
4 h after dark	7.90529	7.692310000000001	8.06327
8 h after dark	7.6970600000000005	7.65004	7.7462800000000005
12 h after dark	7.575143333333333	7.4188	7.70875