condition	mean	min	max
4 h after light	7.5322033333333325	7.335189999999999	7.702889999999999
8 h after light	7.74369	7.5964100000000006	7.9251
12 h after light	7.492453333333333	7.47365	7.512239999999999
4 h after dark	7.611626666666667	7.396439999999999	7.83398
8 h after dark	7.53626	7.42123	7.6168
12 h after dark	7.53283	7.34484	7.651260000000001