condition	mean	min	max
4 h after light	6.021303333333333	5.80432	6.31065
8 h after light	5.95749	5.912380000000001	5.98517
12 h after light	5.911836666666667	5.67171	6.0519
4 h after dark	5.92876	5.73493	6.16789
8 h after dark	5.78249	5.53639	5.91136
12 h after dark	5.89032	5.865069999999999	5.92307