condition	mean	min	max
4 h after light	7.033005	7.03091	7.0351
8 h after light	6.7630615	6.700623	6.8255
12 h after light	7.5596630000000005	7.537498	7.581828
4 h after dark	6.7065085	6.649952	6.763065
8 h after dark	7.7652425	7.711922	7.818563
12 h after dark	7.457014	7.457014	7.457014