condition mean min max 4 h after light 5.284355 3.89027 6.67844 8 h after light 1.8023950000000002 1.02167 2.58312 12 h after light 0.812857 0.731597 0.894117 4 h after dark 0.726210069 2.07e-07 1.49691 8 h after dark 2.6587833979999997 1.94e-07 5.5527 12 h after dark 2.7103366666666666 1.54381 3.85672