code: def colAdd(self,name="",desc="",unit="",comment="",coltype=0,data=[],pos=None):
          
          if pos is None:
              pos=len(self.colNames)
          self.colNames.insert(pos,name)
          self.colDesc.insert(pos,desc)
          self.colUnits.insert(pos,unit)
          self.colComments.insert(pos,comment)
          self.colTypes.insert(pos,coltype)
          self.colData.insert(pos,data)
          return
docs: column types:
              0: Y
              1: Disregard
              2: Y Error
              3: X
              4: Label
              5: Z
              6: X Error