def METHOD_NAME(self, tup):
    self.diff_stored = tup[0] - self.stored
    self.stored = tup[0]
    self.diff_bstored = tup[1] - self.bstored
    self.bstored = tup[1]
    self.diff_drops = tup[2] - self.drops
    self.drops = tup[2]