condition	mean	min	max
4 h after light	8.264543333333334	8.12063	8.44448
8 h after light	8.166553333333333	7.964339999999999	8.26808
12 h after light	8.449056666666667	8.29738	8.557789999999999
4 h after dark	8.32061	8.15462	8.5028
8 h after dark	8.27441	8.07388	8.59733
12 h after dark	8.18178	8.02939	8.28533