condition	mean	min	max
4 h after light	8.599543333333333	8.49525	8.73557
8 h after light	8.71635	8.48991	8.91943
12 h after light	8.603463333333334	8.53537	8.64376
4 h after dark	8.013426666666668	7.71163	8.25486
8 h after dark	7.84526	7.61106	8.20753
12 h after dark	8.0	7.9662	8.0561