CGoering@nyiso.com writes to the NYISO_TECH_EXCHANGE Discussion List:

The NYISO is reserving the following hours in the September 16, 2001
Real-Time Market per ECA 20010608B to verify prices:

HQ:  none
NE:  none
OH:  none
PJM: 0:00-7:00, 15:00, 17:00

All other prices in the September 16, 2001 Real-Time Market are correct.
Prices in the September 17, 2001 Day-Ahead Market are correct.

This e-mail information is a copy of the official posting which can be
found at the following address of our website:
http://mis.nyiso.com/public/htm/OperMessages/CurrentOperMessages.htm#mm