H ii LF for the original sample (histogram). Thick dashed and thick solid lines represent a double power-law fit for the faint part ( L < 10 ^37.1 erg s ⁻¹) and the bright part ( L > 10 ^37.1 erg s ⁻¹), respectively. The power-law indices are α = −2.25 ± 0.02 for the bright part and α = −1.42 ± 0.01 for the faint part. An arrow marks the break point.