condition mean min max 0 h after light 0.7307365 0.620564 0.840909 4 h after light 0.9406495 0.925772 0.955527 8 h after light 0.737086 0.439302 1.03487 4 h after dark 1.620935 1.27097 1.9709 8 h after dark 1.63933 1.63459 1.64407 12 h after dark 0.7537575 0.391735 1.11578