DATA6-1:  Data on cost function
    Source:  W.A. Spurr and C.P.Bonini, STATISTICAL ANALYSIS FOR BUSINESS
    DECISIONS, Irwin, 1973, Page 535.
    UNITCOST = COST PER UNIT IN DOLLARS (RANGE 3.65 - 6.62)
    OUTPUT   = INDEX OF OUTPUT (RANGE 50 - 104)
    INPCOST  = INDEX OF INPUT COSTS (RANGE 80 - 150)

SAMPLE 1 20
READ (DATA6-1) UNITCOST OUTPUT INPCOST