# File lib/numru/nusdas.rb, line 208
    def var_names
      vars = Array.new
      @meta.each{|t1,t1h|
        t1 = t1.strip
        t1h.each{|t2,t2h|
          t2 = t2.strip
          t2h.each{|t3,t3h|
            t3 = t3.strip
            t3h.each{|bt,hash|
              path = [t1,t2,t3,hash[:basetime_str]].join("/")
              hash[:elements].each_with_index{|elm,i|
                if hash[:fnumber][i,true,true,true].lt(@@fnumber_max).count_true > 0
                  vars.push [path,elm.strip].join("/")
                end
              }
            }
          }
        }
      }
      return vars
    end