$PROBLEM
$DATA NMDATA7.CSV
$INPUT ID DV
$PRED
     W=THETA(2)                 ;SD
     CL=THETA(1)*EXP(ETA(1))    ;CL/F
     PRE=1/CL                   ;@ SS ASSUMING INPUT RATE = 1 
     RES1=(DV-PRE)/W
     Y=PRE+EPS(1)*W

$THETA
     (0,.1)      ;CL/F
     (0,1)       ;SD ADDITIVE
$OMEGA
     .1
$SIGMA
     1 FIX
$EST MAXEVALS=9999 METH=1 PRINT=1
$COV PRINT=E
$TABLE ID RES1 ONEHEADER NOAPPEND NOPRINT FILE=TWS7.TXT
;