condition	mean	min	max
4 h after light	6.56877	6.42375	6.68784
8 h after light	6.69074	6.5012099999999995	6.930460000000001
12 h after light	6.70025	6.5349699999999995	6.8521399999999995
4 h after dark	6.509216666666666	6.16257	6.7191600000000005
8 h after dark	6.413126666666667	6.21673	6.5492099999999995
12 h after dark	6.322236666666667	6.15613	6.53693