condition	mean	min	max
4 h after light	7.6772366666666665	7.631819999999999	7.75675
8 h after light	7.7382133333333325	7.528339999999999	8.010489999999999
12 h after light	7.702966666666667	7.68232	7.72492
4 h after dark	7.754353333333333	7.52533	7.941389999999999
8 h after dark	7.711749999999999	7.541689999999999	8.00961
12 h after dark	7.704759999999999	7.6055399999999995	7.77129