condition mean min max 4 h after light 1.482695 1.44135 1.52404 8 h after light 2.430285 2.27662 2.58395 12 h after light 2.598155 2.15664 3.03967 4 h after dark 5.26954 3.92793 6.61115 8 h after dark 2.567705 2.3119 2.82351 12 h after dark 2.038925 1.76801 2.30984