condition	mean	min	max
4 h after light	7.02309	6.772069999999999	7.19902
8 h after light	7.0488	6.97531	7.1235100000000005
12 h after light	7.335283333333333	7.035010000000001	7.562239999999999
4 h after dark	7.126213333333333	7.020910000000001	7.22213
8 h after dark	6.936986666666667	6.70525	7.26279
12 h after dark	6.625163333333333	6.47814	6.77941