condition mean min max 0 h after light 5.70776 5.44016 5.97536 2 h after light 3.202095 2.83906 3.56513 4 h after light 3.753895 3.41393 4.09386 8 h after light 4.11709 3.70257 4.53161 12 h after light 6.39159 6.00137 6.78181 2 h after dark 6.90853 5.90565 7.91141 4 h after dark 7.06541 6.39944 7.73138 8 h after dark 9.07833 8.55538 9.60128 12 h after dark 6.371335 5.97745 6.76522