condition	mean	min	max
4 h after light	7.229093333333333	7.18665	7.2615300000000005
8 h after light	7.149113333333333	7.0408100000000005	7.2872699999999995
12 h after light	7.075976666666667	6.93036	7.228219999999999
4 h after dark	7.299390000000001	7.11171	7.4939800000000005
8 h after dark	7.34743	7.150110000000001	7.550610000000001
12 h after dark	7.222716666666666	7.133789999999999	7.32257