A new and distinct cultivar of Alstroemeria plant named \u2018Zanfines\u2019, characterized by its erect and strong flowering stems; vigorous growth habit; white-colored flowers with few spots and stripes; and good postproduction longevity. In some embodiments, a selected resistive state is written to a magnetic tunneling structure by applying a succession of indeterminate write pulses thereto until the selected resistive state is verified. The solar collectors are positioned to allow a member of the framework to engage a pair of flexible clips attached to adjacent solar collectors during assembly of the solar array. fluorometers, photometers and luminometers. A symmetry determining circuit determines a positive-negative symmetrical state of the AC power output to the lamp with respect to ground.