condition mean min max 3 h after light 3.91824 3.11754 4.65399 6 h after light 1.9521566666666668 1.33798 2.6173 9 h after light 2.86029 1.58137 3.68954 12 h after light 3.20111 1.64948 4.34681 3 h after dark 3.34887 2.92867 3.58581 6 h after dark 1.65341 1.04634 2.33227 9 h after dark 1.6388066666666665 1.33188 1.91115 12 h after dark 2.20732 1.96946 2.57228