condition mean min max 4 h after light 9752.062779 9219.496667 10162.94667 8 h after light 13368.13 10493.28333 15184.06 12 h after light 13382.052223333334 10386.4 15573.66667 1.5 h after dark 12904.166663333333 10583.83333 14941.31333 5.5 h after dark 11767.076665666667 9502.776667 13489.43333 9.5 h after dark 9632.177776666666 8984.97 10223.40333