condition mean min max 0 h after light 6.07031 5.86256 6.27806 4 h after light 3.49487 3.48803 3.50171 8 h after light 2.280385 2.16073 2.40004 4 h after dark 1.93914 1.69429 2.18399 8 h after dark 5.49999 5.07704 5.92294 12 h after dark 6.046575000000001 5.43092 6.66223