This is the scale hive graph from Paul's scale hive. http://www.paulsapiary.com
This is an overwintered Saskatraz queen hive. The hive added about 80 lbs of honey from May 17 until June 16th. The bulk of the honey from about May 20th until around June 6th. After June 6th the hive has put on about 6 lbs. of honey. Which at the moment, there is no indication that a major honey flow has started yet. The scale is on an upward trend, so we will see if it starts rising in the very near future.
The bulk of the honey corresponded with the blooming of Black Locust trees. Paul said he has never got so much honey in the spring before. The Saskatraz queen built up very well coming out of winter and he was able to reap the reward.