condition	mean	min	max
4 h after light	6.944053333333333	6.85347	6.998819999999999
8 h after light	6.8895100000000005	6.7869600000000005	7.031630000000001
12 h after light	6.880520000000001	6.42037	7.232880000000001
4 h after dark	6.928086666666666	6.7539	7.17647
8 h after dark	6.94021	6.91685	6.96082
12 h after dark	7.074076666666667	6.93905	7.147880000000001