condition mean min max 4 h after light 5.338723333333333 5.27245 5.45735 8 h after light 5.19912 5.13645 5.2817099999999995 12 h after light 5.252653333333333 5.22171 5.300619999999999 4 h after dark 5.282783333333334 5.21822 5.35335 8 h after dark 5.331606666666667 5.24774 5.39611 12 h after dark 5.425549999999999 5.33259 5.54669