How many Pokémon can be caught with a single copy of Platinum?

Question

Out of the 210 Pokémon in the native Platinum dex, how many are obtainable with only a single copy of Pokémon Platinum? This means no trading with Diamond/Pearl or from the Gen 3 games and no dual slotting.

Preferred if this was answered for the 493 national dex too.

Edit: Events that are no longer distributed also do not count, e.g. Arceus.

Comments

371, according to https://www.smogon.com/forums/threads/how-many-pokemon-are-obtainable-in-each-title.3690638/. Though I haven't gone through them all to make sure that's accurate :P