condition mean min max 4 h after light 13.95695 11.4402 16.4737 8 h after light 17.511049999999997 16.8666 18.1555 12 h after light 21.823 20.9402 22.7058 4 h after dark 63.470866666666666 60.9596 66.922 8 h after dark 43.0239 40.2917 47.6096 12 h after dark 45.6744 44.8449 46.7019