condition mean min max 4 h after light 1.2322223333333333 0.632357 1.91078 8 h after light 1.175514 0.583842 1.59681 12 h after light 2.5080999999999998 1.65311 3.14519 4 h after dark 1.8368933333333333 1.24136 2.60262 8 h after dark 2.1008566666666666 1.95588 2.17509 12 h after dark 1.53149 1.27399 1.85816