condition mean min max 4 h after light 1.419695 1.2816 1.55779 8 h after light 1.366085 1.27198 1.46019 12 h after light 1.1180205 0.841071 1.39497 4 h after dark 2.8736249999999997 2.72679 3.02046 8 h after dark 1.8663699999999999 1.8608 1.87194 12 h after dark 1.793595 1.2851 2.30209