condition mean min max 4 h after light 317.2612355 286.754798 347.767673 8 h after light 314.360011 287.770518 340.949504 12 h after light 260.473881 247.539749 273.408013 4 h after dark 211.4736735 194.693595 228.253752 8 h after dark 230.720308 226.91523 234.525386 12 h after dark 212.043512 212.043512 212.043512