SURVEY OF INCOME AND PROGRAM PARTICIPATION,
2001 PANEL LONGITUDINAL REPLICATE WEIGHT FILE DATA DICTIONARY

DATA			SIZE		BEGIN

D  SSUID		12		1
T  SU:   Sample Unit Identifier
	This identifier is created by scrambling together the PSU, Segment, Serial, Serial Suffix
	of the original sample address.  It may be used in matching sample units from different 
	waves.
V  000000000000:999999999999 .Scrambled ID

D  SPANEL		4		13
T  SU:	Sample Code - Indicates Panel Year
U  All Persons
V  2001 .Panel Year

D  CTL_DATE		7		17
     Date of the controls to which weights correspond
U  All Persons
V  Jan2001  -  Control date for PN1, PN2, PN3, and CY1 weights
V  Jan2002  -  Control date for CY2 weights
V  Jan2003  -  Control date for CY3 weights

D  LGTWTTYP		3		24
    Weighting designation describing the longitudinal period for which the weights were produced
U  All Persons
V  CY1  -  Designation for Calendar Year 2001 Weights
V  CY2  -  Designation for Calendar Year 2002 Weights
V  CY3  -  Designation for Calendar Year 2003 Weights
V  PN1  -  Designation for Full Panel Weights from January 2001 through December 2001
V  PN2  -  Designation for Full Panel Weights from January 2001 through December 2002
V  PN3  -  Designation for Full Panel Weights from January 2001 through December 2003

D  PNLLENGTH		2		27
U  All Persons
    Number of waves of data collection for the Panel identified by SPANEL
V  09 .for 2001 panel

D  EPPPNUM		4		29
U  All Persons
T  PE:	Person Number.  This field differentiates persons within the sample unit.  
	Person number is unique within the sample unit.
V  0101:0999

D  REPWGT1		10		33
T  WW:  Person replicate weight.  (Four implied decimal positions)
U  All Persons
V  000000000000:999999999999 .Final Person Weight

D  REPWGT108		10		1103
T  WW:  Person replicate weight.  (Four implied decimal positions)
U  All Persons
V  000000000000:999999999999 .Final Person Weight