condition	mean	min	max
4 h after light	6.54981	6.288069999999999	6.927639999999999
8 h after light	6.503433333333333	6.31171	6.8505199999999995
12 h after light	6.440403333333333	6.29791	6.721089999999999
4 h after dark	6.587036666666667	6.36905	6.946560000000001
8 h after dark	6.5864199999999995	6.34695	6.95265
12 h after dark	6.5145	6.34645	6.80929