code: def qmed_all_methods(self):
          
          result = {}
          for method in self.methods:
              try:
                  result[method] = getattr(self, '_qmed_from_' + method)()
              except:
                  result[method] = None
          return result
docs: Returns a dict of QMED methods using all available methods.
  
          Available methods are defined in :attr:`qmed_methods`. The returned dict keys contain the method name, e.g.
          `amax_record` with value representing the corresponding QMED estimate in m³/s.
  
          :return: dict of QMED estimates
          :rtype: dict