condition mean min max 4 h after light 0.04359345 0.0 0.0871869 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 0.01889405 0.0 0.0377881 12 h after dark 0.03132225 0.0 0.0626445