condition mean min max 4 h after light 1.1901700000000002 1.16778 1.21256 8 h after light 1.19707 1.15579 1.23835 12 h after light 2.041325 1.97621 2.10644 4 h after dark 1.98632 1.72098 2.25166 8 h after dark 1.36265 1.19504 1.53026 12 h after dark 1.4415 1.2174 1.6656