? FILE NAME = PAN_READ.LIM
? THIS PROGRAM IS FOR READING PANEL.DB
 
READ ; NOBS= 2500 ; NVAR=33
     ; FILE=PANEL.DB 
     ; FORMAT=(6G13.6)
     ; NAMES= Y,X1,X2,X3,X4,Z2,Z3,Z4,
              YB,X1B,X2B,X3B,X4B,
              X11AM,X12AM,X13AM,X14AM,X15AM,
              X21AM,X22AM,X23AM,X24AM,X25AM,
              X31AM,X32AM,X33AM,X34AM,X35AM,
              X41AM,X42AM,X43AM,X44AM,X45AM  $