condition mean min max 4 h after light 9.036795999999999 5.944349 14.51728 8 h after light 12.770729333333334 7.676429 22.24761 12 h after light 16.710333333333335 10.32876 23.75785 16 h after light 20.25104 11.32537 34.21436 4 h after dark 30.792463333333334 19.984 46.5217 8 h after dark 14.789656666666666 10.6589 21.977629999999998