Detailed IMO Leonid 2000 studies including 614.22 hours teff from 230 observers from around the world show three distinct maxima in ZHR. The first peak is at lambda=235.28 +/- 0.01, that is Nov 17, 8:07UT, about 15 minutes after the predicted passage time of the 1932 dust trail. ZHR reached 130 +/- 20.

The second peak is very broad, a 1-hour plateau of activity with a peak centered at lambda 236.09 +/-0.01, Nov 18, 3:24UT. Rates peaked at 290 +/- 20 per hour. The enhancement was caused by the passage of the 1733 dust trail.

The third peak takes place near lambda 236.25 +/- 0.01 with top ZHR of 480 +/- 20 occuring 40 minutes before the predicted time, at 7:12UT.

IMO ZHR graph.