<prompt> Translate the following text to SwahiliLC50s for flow-through tests with Mysidopsis bahia and Cyprinodon variegatus were calculated two different ways -- 1 on the basis of the nominal toxicant concentrations Nom, and 2 on the basis of measured Meas toxicant concentrations.  <response>: Kwa mfano, katika vipimo vya mtiririko wa mtiririko wa Mysodopsis bahia na Cyprinodon variegatus, LC50s zilihesabiwa kwa njia mbili tofauti - 1 kwa msingi wa viwango vya kawaida vya sumu NOM na 2 kwa msingi wa viwango vya sumu vilivyopimwa MET. 