condition	mean	min	max
4 h after light	7.8765600000000004	7.845560000000001	7.901739999999999
8 h after light	7.758713333333334	7.474410000000001	7.9927
12 h after light	7.82581	7.6954899999999995	8.068019999999999
4 h after dark	7.68993	7.49765	7.93399
8 h after dark	7.549756666666667	7.38583	7.7389600000000005
12 h after dark	7.661203333333334	7.381130000000001	7.82803