condition mean min max 4 h after light 5.054279999999999 4.74377 5.3087 8 h after light 5.136866666666666 4.9217699999999995 5.50031 12 h after light 5.1737 5.02177 5.39372 4 h after dark 5.1800500000000005 5.0793800000000005 5.31018 8 h after dark 5.202859999999999 4.833419999999999 5.75854 12 h after dark 5.245340000000001 4.94944 5.756530000000001