condition	mean	min	max
4 h after light	7.96573	7.82862	8.07137
8 h after light	8.07489	7.8691699999999996	8.2092
12 h after light	7.817606666666667	7.592960000000001	8.06325
4 h after dark	8.120849999999999	7.88824	8.33799
8 h after dark	8.036886666666668	7.93433	8.14715
12 h after dark	7.98104	7.799860000000001	8.11313