condition	mean	min	max
4 h after light	8.412836666666667	8.185030000000001	8.53092
8 h after light	8.532833333333334	8.38118	8.691180000000001
12 h after light	8.46448	8.378210000000001	8.522960000000001
4 h after dark	8.67452	8.560939999999999	8.87226
8 h after dark	8.712376666666668	8.570780000000001	8.80787
12 h after dark	8.889420000000001	8.76397	9.00033