Here are the curves:

GDP-CAL BORDER
GDP-CGT/APPALAC
GDP-CHI. GATE
GDP-CNG/SOUTH
GDP-ELPO/PERM2
GDP-ELPO/SANJUA
GDP-HEHUB 
GDP-HPL/SHPCH
GDP-KERN/OPAL
GDP-MALIN-CITYGA
GDP-MICHCON
GDP-NTHWST/CANB
GDP-PAN/TX/OK
GDP-PG&E/CITIGA
GDP-TENN/500
GDP-TETCO/M3
GDP-TRCOZ6/NY
GDP-WAHA
NW STANF/1ST-GD
NW-STANFIELD


Thanks for all of the help,
Susan