code: def calc_qpout_v1(self):
      
      der = self.parameters.derived.fastaccess
      flu = self.sequences.fluxes.fastaccess
      for idx in range(der.nmb):
          flu.qpout[idx] = flu.qma[idx]+flu.qar[idx]
docs: Calculate the ARMA results for the different response functions.
  
      Required derived parameter:
        |Nmb|
  
      Required flux sequences:
        |QMA|
        |QAR|
  
      Calculated flux sequence:
        |QPOut|
  
      Examples:
  
          Initialize an arma model with three different response functions:
  
          >>> from hydpy.models.arma import *
          >>> parameterstep()
          >>> derived.nmb(3)
          >>> fluxes.qma.shape = 3
          >>> fluxes.qar.shape = 3
          >>> fluxes.qpout.shape = 3
  
          Define the output values of the MA and of the AR processes
          associated with the three response functions and apply
          method |calc_qpout_v1|:
  
          >>> fluxes.qar = 4.0, 5.0, 6.0
          >>> fluxes.qma = 1.0, 2.0, 3.0
          >>> model.calc_qpout_v1()
          >>> fluxes.qpout
          qpout(5.0, 7.0, 9.0)