condition	mean	min	max
4 h after light	6.637356666666666	6.51858	6.716889999999999
8 h after light	6.468073333333334	6.39935	6.5121
12 h after light	7.37453	7.16568	7.49407
4 h after dark	7.768316666666666	7.4386	8.0099
8 h after dark	7.4172	6.978739999999999	7.655880000000001
12 h after dark	7.071716666666666	6.92001	7.1522