 is an online convention that starts March 6th at 4pm ET.

As of Feb 17th, there are 80 attendees on 

How many will be listed on March 6th at 5pm ET? (one hour after the official start time)

Feb 28: smuggled this out of the (open) organizing meeting:

This graph appears to fairly-closely match the 128 entities currently on the public network map.

March 2: 139 attendees -- >150 looks very likely at this point IMHO

(For the purposes of this question, all entities count as attendees, whether they represent individuals or organizations. If the network map disappears, the question will resolve NA. If there's some other "more official" way of counting attendees used by event organizers, this question will stick with the network map as already described.)