condition	mean	min	max
4 h after light	7.813423333333334	7.786110000000001	7.84549
8 h after light	7.557653333333334	7.25369	7.76435
12 h after light	8.07286	7.793089999999999	8.24826
4 h after dark	7.993106666666667	7.8398	8.24793
8 h after dark	7.93062	7.829839999999999	8.07571
12 h after dark	7.831823333333333	7.72156	7.989730000000001