condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0837469 0.0743934 0.0931004 12 h after light 0.0241049 0.0 0.0482098 4 h after dark 0.0651829 0.0 0.131241 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0