condition mean min max 4 h after light 1.8426200000000001 1.13046 2.54625 8 h after light 0.8668853333333334 0.137607 1.76502 12 h after light 0.9289293333333334 0.440578 1.18615 4 h after dark 1.8911799999999999 0.7352 2.86107 8 h after dark 3.8357933333333336 2.43447 5.34632 12 h after dark 3.8435166666666665 3.09451 5.3382