def to_a
      if @repeat >= 1
        (::Bullshit::Clock::ALL_COLUMNS).map do |t|
          analysis[t].elements
        end.transpose
      else
        []
      end
    end
def to_a
      if @repeat >= 1
        (::Bullshit::Clock::ALL_COLUMNS).map do |t|
          analysis[t].elements
        end.transpose
      else
        []
      end
    end
Returns the measurements as an array of arrays.