Where could we get the additional dev data in W-NUT 2016?

Dear Prof. Ritter,

Hi, I was wondering where we can get the additional 425 tweets which acted as additional dev data in W-NUT 2016, according to [the result report](http://noisy-text.github.io/2016/pdf/WNUT19.pdf).


Thank you very much.

Best regards,
Bill 