condition mean min max 4 h after light 4.358063333333333 4.26093 4.4512 8 h after light 4.36932 4.269080000000001 4.48268 12 h after light 4.473999999999999 4.244619999999999 4.71111 4 h after dark 4.391873333333334 4.33673 4.4412400000000005 8 h after dark 4.283006666666666 4.26616 4.3134 12 h after dark 4.41881 4.30653 4.5608699999999995