Actually that other explanation is for fractional tickets in other locations of the database, like prizes remaining.
Specifically in `num_tx_initial` it might be because they don't report the number of tickets printed. But if they print the odds of a win and numbers of winners available, then you can estimate how many non-winners there are and thus how many printed tickets there are.
Specifically in `num_tx_initial` it might be because they don't report the number of tickets printed. But if they print the odds of a win and numbers of winners available, then you can estimate how many non-winners there are and thus how many printed tickets there are.