condition	mean	min	max
4 h after light	8.735556666666668	8.49325	8.87798
8 h after light	9.02337	8.97917	9.09998
12 h after light	9.11234	8.97752	9.21223
4 h after dark	9.066793333333333	8.78711	9.27469
8 h after dark	9.148926666666666	8.97755	9.26563
12 h after dark	9.04819	8.89131	9.163739999999999