condition	mean	min	max
4 h after light	7.92641	7.646719999999999	8.15008
8 h after light	7.7949633333333335	7.5849	8.05988
12 h after light	8.044716666666666	7.904160000000001	8.25335
4 h after dark	7.903463333333334	7.65115	8.1536
8 h after dark	7.994143333333334	7.901560000000001	8.05204
12 h after dark	8.07912	8.06361	8.102269999999999