如何在页面上叠加显示几个图层?

[罗克]

有时候我想同时了解不同云层的影响，譬如要如何显示低云和中云在页面的数据?

[idefix37]

@罗克

I think the Clouds layer shows you the areas of medium and low cloud cover expressed as a percentage. Is that not what you want?
Personally I use a customized color scale for Clouds which is may be more intuitive.