Spectator economy panel

What are the meaning of the numbers in the spectator economy panel.

They are the economy...just like when you are playing a match and you see the numbers next to your eco you can now see their eco as you spectate a match. Hope I answered your Q

I mean do the numbers mean the total capacity, the current amount, the current demand, or the current production

format is :
net production/total production | % efficiency

so right hand # should always be positive and will almost always be higher than lefthand number (unless you are building nothing and not running radar etc).

Are you sure it is not total production /net production

This may have changed since last time I checked it, but I think the spectator eco-bar shows Income / (Income - Usage).
Where (Income - Usage) is positive (blue) if you're not using all your income and negative (red) if you are trying to use more than your income.

Could well be that way round. I didn't actually check a screenshot, was just basing it on memory and letting you know what the numbers were meant to show.

Thanks for the answers