In my current case, the ground port in question has a demand (not a supply) for hydrogen fuel of 50,623
Ah. If it's a ground port, subject to the "3 commodity export" rule, then getting it to export Gold (or indeed, any specific commodity) is likely more trouble than it's worth.
Very interesting. Care to explain that a bit more?
What does "baseline trade quantities, adjusted for economy size" mean? Is this the total supply? Or the increase on the supply tick?
So i just docked at a 0.9 Refinery station. How can i estimate the probable size of the resupply tick and the probable max supply of a metal?
These are the quantities available in the baseline condition for the market (State: None, no recent trades in that commodity) per economic unit.
The size of a market in economic units isn't directly measurable, though.
So we need to work backwards first to find out the market size. Hydrogen Fuel is generally the most convenient thing to use for this - no-one trades in it, and so far as I can tell it doesn't vary in supply between markets of the same size.
So let's say that we have 10,000t of H-Fuel on the market, and the BGS state is None [1]. H-Fuel has a supply of 42.5 tonnes [2] per economic unit, so this station has about 235 economic units.
If we look now at Steel, the supply of that is between 14.4 and 57.8 tonnes per economic unit [3]. So the market supply cap for Steel will be between about 3500t and about 13500t depending on where this station falls.
Resupply tick is going to be a lot trickier: resupply is as a proportion of the maximum supply, but isn't a constant rate for a particular commodity - it also varies from station to station. So really there's no way to be sure without extended observation of the market. I don't even have good average data for Steel - but commodities with a similar galactic average price (the higher the price, in general the slower the regeneration) suggest that Steel might fully regenerate a depleted supply in about 5 days.
So a ten minute supply tick would be 1/(5*24*6) = 1/720 of maximum supply, giving between 5t and 20t of Steel per supply cycle
if that estimate of the resupply rate was correct. Actual values could be substantially outside that range, though.
[1] If not, we'll need to correct for that using the State Effects tables -
https://cdb.sotl.org.uk/effects - for whatever state the station is in (and hope that they have a value calculated...). Let's assume State: None for now.
[2] There's a complication here, in that this is only true of non-Colony economies, and probably not true of Odyssey settlements. So I'm assuming that the station is 0.9 Refinery
and nothing else, and an outpost or larger.
[3] It's possible the range is somewhat wider than this, as I have a limited sample of markets to check.