Before the start of Tatkal, this train showed Tatkal availability as 3 for 3AC and 40 for Sleeper from MAS-PGT. I tried to book Sleeper, it went for regret. But when i checked availbilty of 3AC, it showed 10. Finally i got the ticket in 3AC
How did availabilty jumbed from 3 to 10(around 10:03am) when tatkal opened.