ref #168 , now percentage is calculated from trues / (trues + falses) i.e. no unknowns
ref #168 , now percentage is calculated from trues / (trues + falses) i.e. no unknowns

SEL-Columbia/nmis,SEL-Columbia/nmis,SEL-Columbia/nmis,SEL-Columbia/nmis,SEL-Columbia/nmis,SEL-Columbia/nmis