condition	mean	min	max
4 h after light	7.765673333333333	7.67362	7.877960000000001
8 h after light	7.6311	7.48227	7.734430000000001
12 h after light	7.901876666666666	7.8452399999999995	7.9669
4 h after dark	7.887693333333333	7.63191	8.09308
8 h after dark	7.89071	7.790710000000001	8.072289999999999
12 h after dark	7.869770000000001	7.817830000000001	7.94685