condition	mean	min	max
4 h after light	4.87652	4.76004	4.993
8 h after light	6.444775	5.94904	6.94051
12 h after light	12.230550000000001	12.0609	12.4002
4 h after dark	18.78735	16.4064	21.1683
8 h after dark	11.838000000000001	11.6052	12.0708
12 h after dark	6.964700000000001	6.57711	7.35229