condition mean min max 0 h after light 14.3468 13.3732 15.3204 4 h after light 6.01643 5.28716 6.7457 8 h after light 2.6933949999999998 2.48895 2.89784 4 h after dark 3.1288349999999996 2.27573 3.98194 8 h after dark 3.80044 3.12973 4.47115 12 h after dark 14.011185000000001 9.37787 18.6445