condition mean min max 4 h after light 47.91785 41.9214 53.9143 8 h after light 54.0312 53.1481 54.9143 12 h after light 54.72495 54.6732 54.7767 4 h after dark 58.8984 56.6422 60.6139 8 h after dark 70.42943333333334 67.0498 74.6837 12 h after dark 59.2877 58.0576 59.9956