condition	mean	min	max
4 h after light	7.78944	7.75173	7.81124
8 h after light	7.83809	7.72823	8.0205
12 h after light	7.890373333333334	7.7531	8.02919
4 h after dark	8.03104	7.79385	8.279710000000001
8 h after dark	8.167440000000001	7.988110000000001	8.39354
12 h after dark	8.02641	7.794169999999999	8.19927