condition	mean	min	max
4 h after light	7.1753775	7.163682	7.187073
8 h after light	7.3907225	7.267062	7.514383
12 h after light	7.977511	7.626034	8.328988
4 h after dark	6.738402499999999	6.497102	6.979703
8 h after dark	7.5269569999999995	7.514383	7.539531
12 h after dark	7.158257	7.158257	7.158257