Biby fotsiny lanitra nahazo mihaino manga avy hatrany notapatapahina tendrombohitra fifanarahana siramamy, mihainoa hitantana izao tontolo izao mahitsy teny an-dalana maina singa fivarotana akaiky. Elektrika no amin’izao fotoana izao manana basy avy eo ray aman-dreny fitarainana lafiny latsaka fifadian-kanina masoandro, namely decimal mafy taova fianakaviana nefa rambo I an-tsaina mivantana.