condition	mean	min	max
4 h after light	8.37617	8.05358	8.60885
8 h after light	8.487296666666667	8.19388	8.69805
12 h after light	8.319423333333333	7.86442	8.56958
4 h after dark	8.65674	8.13888	9.06724
8 h after dark	8.74037	8.47724	8.98673
12 h after dark	8.90734	8.64532	9.076089999999999