condition mean min max 4 h after light 5.501040000000001 5.383830000000001 5.73284 8 h after light 5.460193333333334 5.33605 5.57665 12 h after light 5.547136666666667 5.332000000000001 5.93542 4 h after dark 5.4752133333333335 5.31923 5.63008 8 h after dark 5.4839 5.29705 5.75324 12 h after dark 5.413536666666666 5.3791400000000005 5.4752