condition mean min max 0 h after light 0.286306 0.0 0.572612 4 h after light 1.9865925 0.873615 3.09957 8 h after light 1.28464 0.87277 1.69651 4 h after dark 0.422696 0.0 0.845392 8 h after dark 0.708427 0.281474 1.13538 12 h after dark 0.9834025 0.570825 1.39598