condition	mean	min	max
4 h after light	6.1888	6.12531	6.28435
8 h after light	6.2163	6.0992	6.2942800000000005
12 h after light	6.08681	5.94647	6.16252
4 h after dark	6.119203333333333	5.98726	6.21906
8 h after dark	6.1725666666666665	6.14726	6.19254
12 h after dark	6.029726666666667	5.92809	6.10325