condition	mean	min	max
4 h after light	5.97039	5.91966	6.02112
8 h after light	7.438955	7.20557	7.67234
12 h after light	8.586475	8.54498	8.62797
4 h after dark	11.5502	10.711	12.3894
8 h after dark	9.217055	8.89432	9.53979
12 h after dark	8.16266	7.9904	8.33492