You can do it in one loop...
DEFINE VARIABLE deMaxValue AS DECIMAL NO-UNDO.
DEFINE VARIABLE deMinValue AS DECIMAL NO-UNDO.
DEFINE VARIABLE deNUMBERS AS DECIMAL NO-UNDO EXTENT 7 INIT [ 0, 0.0579345088, 0.0579345088, 0.0579345088, 0.0502793296, 0.0346715328, 0.029455081 ] ...