condition mean min max 0 h after light 61.05505 56.4126 65.6975 4 h after light 93.9274 86.0668 101.788 8 h after light 131.739 124.198 139.28 4 h after dark 152.2905 101.794 202.787 8 h after dark 111.5829 64.7038 158.462 12 h after dark 129.585 112.473 146.697