Posterdati

           (loop
              for quantity in quantities-list
              for colour from 0
              do
                (mod colour 16)
                (loop
                   for prosumer-name in prosumer-names-list
                   do
                     (setq data-array (grid:make-foreign-array 'double-float
                                                               :dimensions (length prosumers-data)
                                                               :initial-element 0d0))
                     (loop
                        for timestamp-data in prosumers-data
                        do
                          (+ 1 2))))))