I am not familiar with the EMB195 but I doubt very much your figures, if 20 min at 2000ft below optimum = 200 Kg that would be 10Kg/min ???? Common !!
Look afain your charts, I think you got a zero wrong somewhere.
ATC Watcher, I did say depending on route length. Those figures are
about right for something like a 2 hour sector with about an hour in the cruise, not a 20 minute cruise. There are a lot of variable so I can't give you an absolute figure.
For a 20 minute cruise take a third of my figures for a ballpark number. About 100kgs, each way, for the 14 aeroplanes in our fleet. That is 2.8 tonnes per day for the sake of 2000'. Multiply that by 365 days in a year and you get close to half a million pounds wasted. Triple that for an average 2 hour sector.
It's easy to see why there are plenty of people unhappy with the current situation in Spain.