condition mean min max 4 h after light 0.009909329 7.58e-07 0.0198179 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 1.4992633333333334 0.0 3.17609 12 h after dark 0.0 0.0 0.0