condition	mean	min	max
4 h after light	8.32216	8.022689999999999	8.56273
8 h after light	7.907396666666666	7.83183	7.99034
12 h after light	7.82203	7.636139999999999	7.94809
4 h after dark	8.06062	7.9772	8.17021
8 h after dark	8.22451	8.102269999999999	8.46311
12 h after dark	8.524136666666667	8.428360000000001	8.61285