When the overall index Z 1 is more than 2.99, an enterprise is considered in the safe zone,
with a very low risk of bankruptcy. When a Z 1 score is greater than 1.80 and less than 2.99, a
company is considered to be in the grey zone, since there is no strong indication of a
bankruptcy risk level. A Z 1score index less than 1.80 indicates a strong possibility of failure
and placement in the distress zone (Z 1 < 1.80).