condition mean min max 4 h after light 596.8720000000001 572.501 621.243 8 h after light 490.09950000000003 481.201 498.998 12 h after light 395.6895 385.759 405.62 4 h after dark 125.56333333333333 118.94 135.047 8 h after dark 221.44933333333333 209.699 240.322 12 h after dark 503.0796666666667 490.398 519.753