condition mean min max 4 h after light 137.41774199999998 130.693989 144.141495 8 h after light 159.733656 145.85064 173.616672 12 h after light 186.3406755 162.83391 209.847441 4 h after dark 218.0956995 173.616672 262.574727 8 h after dark 238.61682100000002 221.727493 255.506149 12 h after dark 158.693595 158.693595 158.693595