condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0365838 0.0 0.0731676 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.058366650000000006 0.0391409 0.0775924 12 h after dark 0.0 0.0 0.0