condition mean min max 4 h after light 3.75731 3.41641 4.09821 8 h after light 3.74709 3.26725 4.22693 12 h after light 2.8603949999999996 2.38473 3.33606 4 h after dark 3.6473933333333335 2.98277 4.42764 8 h after dark 4.167856666666666 3.71908 4.73663 12 h after dark 3.439833333333333 2.83945 3.79432