Code for UCEI Data
T 
"Time Counter - 100 times day count plus
hour"
T2 "Time Counter - Observation number"
DATE "Date of observation in format
yyyymmdd"
DC "Day Counter"
YEAR "Year of Observation"
MONTH "Month of Observation"
MOYR "Year and Month of
Observation"
DAY "Day of Observation"
HOUR "Hour of Observation"
WEEK "Week of Observation"
SUNDAY "Dummy if Sunday"
MONDAY "Dummy if Monday"
TUESDAY "Dummy if Tuesday"
WEDNESDA "Dummy if Wednesday"
THURSDAY "Dummy if Thursday"
FRIDAY "Dummy if Friday"
SATURDAY "Dummy if Saturday"
PPXN15 "Price in PX for NP15"
PPXS15 "Price in PX for SP15"
PPXZ26 "Price in PX for ZP26"
PPXSYS "Price in PX for Unconstrained
System"
QPXSYS "Quantity in PX for
Unconstrained System"
PISON15 "Price in ISO for NP15"
PISOS15 "Price in ISO for SP15"
PISOZ26 "Price in ISO for ZP26"
PEXCN15 "Exception Log: Changed Price
in ISO for NP15"
PEXCS15 "Exception Log: Changed Price
in ISO for SP15"
PEXCZ26 "Exception Log: Changed Price
in ISO for ZP26"
DN "Price Difference of ISO minus PX for
NP15"
DS "Price Difference of ISO minus PX for
SP15"
QASYS "Actual System-wide Load"
QXHASYS "Hour Ahead System-wide
Exports"
QMHASYS "Hour Ahead System-wide
Imports"
QXDASYS "Day Ahead System-wide
Exports"
QMDASYS "Day Ahead System-wide
Imports"
QREGDDA "Ancillary Services: Quantity
of Regulation Down Day Ahead"
PREGDNDA "Ancillary Services: Price of
Regulation Down Day Ahead in NP15"
PREGDSDA "Ancillary Services: Price of
Regulation Down Day Ahead in SP15"
PREGDZDA "Ancillary Services: Price of
Regulation Down Day Ahead in ZP26"
QREGDHA "Ancillary Services: Quantity
of Regulation Down Hour Ahead"
PREGDNHA "Ancillary Services: Price of
Regulation Down Hour Ahead in NP15"
PREGDSHA "Ancillary Services: Price of
Regulation Down Hour Ahead in SP15"
PREGDZHA "Ancillary Services: Price of
Regulation Down Hour Ahead in ZP26"
QREGUDA "Ancillary Services: Quantity of
Regulation Up Day Ahead"
PREGUNDA "Ancillary Services: Price of
Regulation Up Day Ahead in NP15"
PREGUSDA "Ancillary Services: Price of
Regulation Up Day Ahead in SP15"
PREGUZDA "Ancillary Services: Price of
Regulation Up Day Ahead in ZP26"
QREGUHA "Ancillary Services: Quantity
of Regulation Up Hour Ahead"
PREGUNHA "Ancillary Services: Price of
Regulation Up Hour Ahead in NP15"
PREGUSHA "Ancillary Services: Price of
Regulation Up Hour Ahead in SP15"
PREGUZHA "Ancillary Services: Price of
Regulation Up Hour Ahead in ZP26"
QSPINDA "Ancillary Services: Quantity
of Spin Day Ahead"
PSPINNDA "Ancillary Services: Price of
Spin Day Ahead in NP15"
PSPINSDA "Ancillary Services: Price of
Spin Day Ahead in SP15"
PSPINZDA "Ancillary Services: Price of
Spin Day Ahead in ZP26"
QSPINHA "Ancillary Services: Quantity
of Spin Hour Ahead"
PSPINNHA "Ancillary Services: Price of
Spin Hour Ahead in NP15"
PSPINSHA "Ancillary Services: Price of
Spin Hour Ahead in SP15"
PSPINZHA "Ancillary Services: Price of
Spin Hour Ahead in ZP26"
QNSPNDA "Ancillary Services: Quantity
of Non-Spin Day Ahead"
PNSPNNDA "Ancillary Services: Price of
Non-Spin Day Ahead in NP15"
PNSPNSDA "Ancillary Services: Price of
Non-Spin Day Ahead in SP15"
PNSPNZDA "Ancillary Services: Price of
Non-Spin Day Ahead in ZP26"
QNSPNHA "Ancillary Services: Quantity
of Non-Spin Hour Ahead"
PNSPNNHA "Ancillary Services: Price of
Non-Spin Hour Ahead in NP15"
PNSPNSHA "Ancillary Services: Price of
Non-Spin Hour Ahead in SP15"
PNSPNZHA "Ancillary Services: Price of
Non-Spin Hour Ahead in ZP26"
QREPLDA "Ancillary Services: Quantity
of Replacement Day Ahead"
PREPLNDA "Ancillary Services: Price of
Replacement Day Ahead in NP15"
PREPLSDA "Ancillary Services: Price of
Replacement Day Ahead in SP15"
PREPLZDA "Ancillary Services: Price of
Replacement Day Ahead in ZP26"
QREPLHA "Ancillary Services: Quantity
of Replacement Hour Ahead"
PREPLNHA "Ancillary Services: Price of
Replacement Hour Ahead in NP15"
PREPLSHA "Ancillary Services: Price of
Replacement Hour Ahead in SP15"
PREPLZHA "Ancillary Services: Price of
Replacement Hour Ahead in ZP26"
Revised January 16, 2003