condition	mean	min	max
4 h after light	6.54308	6.06021	7.02595
8 h after light	5.4506049999999995	5.32037	5.58084
12 h after light	7.731489999999999	6.14788	9.3151
4 h after dark	8.402435	8.10213	8.70274
8 h after dark	6.74716	6.70741	6.78691
12 h after dark	7.56582	7.48982	7.64182