condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0538218 0.0387566 0.068887 4 h after dark 0.015314866666666668 0.0 0.0459446 8 h after dark 0.01620366666666667 0.0 0.048611 12 h after dark 0.0 0.0 0.0