condition	mean	min	max
4 h after light	7.9328	7.827610000000001	8.04616
8 h after light	7.654196666666667	7.531060000000001	7.86285
12 h after light	7.73026	7.693560000000001	7.7994699999999995
4 h after dark	7.758123333333334	7.64755	7.862310000000001
8 h after dark	8.071783333333332	7.8754100000000005	8.279639999999999
12 h after dark	7.97502	7.87568	8.12588