condition mean min max 0 h after light 1.0163250000000001 1.01542 1.01723 4 h after light 1.5974949999999999 1.40161 1.79338 8 h after light 1.56459 1.40645 1.72273 4 h after dark 1.5999725 0.997275 2.20267 8 h after dark 1.875775 1.6001 2.15145 12 h after dark 1.8414350000000002 1.58715 2.09572