witchdoctor
The 6000 comes from the official caa website mate,
one return per day every day of the month = 62 flights per month, 6000 divided by this 62 = 97 pax per flight.
Heard that one of SAS flights came in with around 20 on board, so taking that as the figure, would expect around 1500 pax per month on the flight.
Cheers
Kev