"A static anti-slip coefficient of friction of .50 or above,
is considered a safe walkway surface with a dry condition.
A reading below .50 is considered an unsafe walkway surface."

.60 or above=Very Safe

.50 to .59 =Relatively Safe

.40 to .49 =Dangerous

.35 to .39 =Very Dangerous

.00 to .34 = Unusually Dangerous