cf: 天王星の静的安定度と雲水量


              黒: 1 x solar, 赤: 5 x solar, 緑: 10 x solar

N^2 of CH4 condensation layer is larger than that of H2O, since H2O condensation layer is located in the deeper region and H2O mixing ratio per unit mass dry air (g/kg) is small