condition	mean	min	max
4 h after light	7.391596666666667	7.194189999999999	7.5717
8 h after light	7.24541	7.06732	7.34932
12 h after light	7.356286666666667	7.20498	7.511019999999999
4 h after dark	7.12855	7.0563899999999995	7.225689999999999
8 h after dark	7.1294233333333334	7.045310000000001	7.26843
12 h after dark	7.154766666666666	6.92157	7.322889999999999