condition mean min max 4 h after light 1.961545 1.61788 2.30521 8 h after light 3.781935 3.6898 3.87407 12 h after light 6.922335 6.87088 6.97379 4 h after dark 6.29326 6.26496 6.32156 8 h after dark 4.6451150000000005 4.45944 4.83079 12 h after dark 2.49351 2.15917 2.82785