Again, I agree that it is a bit frustrating that we are having 100 hour months during the summer and 30 in the winter and sometimes it feels like everyone else gets to fly more. However, I compared hours with a colleague that was complaining he got less than everyone else. As it turned out it only differed 10-20 hours between us when we factored in the fact that he had had his month off and mine was coming up.
Also, if you insist on having your month off and ad hoc days during summer when the production is higher, I donīt think you can expect to get the same amount of hours over the year as if you take a hike in January.
Take your 600 or so hours and divide by 12 (yes 12), multiply with your hourly rate and any currency conversion and you will get your average per month. Any more money that shows up in your account around the 12th should be set aside to cover for the month without any pay and the months with reduced pay. I agree with Kempus that if you never reach the expected average per month that would be a bit of a problem, but I donīt think anyone getīs less than 600/year. You cannot expect to get 750-800 anymore, at least not in a training base, perhaps in a place like KUN or so...