condition mean min max 4 h after light 3.72256 3.28756 4.15756 8 h after light 3.9436150000000003 3.76034 4.12689 12 h after light 4.252035 4.23043 4.27364 4 h after dark 4.852745 4.24182 5.46367 8 h after dark 4.894335 4.63783 5.15084 12 h after dark 4.00528 3.79577 4.21479