<prompt> Translate the following text to SwahiliN, the total number of LC50 values used in calculating the CV varied with organism and toxicant because some data were rejected due to water hardness, lack of concentration measurements, andor because some of the LC50s were not calculable.  <response>: Kwa mfano, idadi ya jumla ya LC50 iliyotumiwa katika kuhesabu CV ilitofautiana na kiumbe na sumu kwa sababu baadhi ya data zilikataliwa kwa sababu ya ugumu wa maji, ukosefu wa vipimo vya mkusanyiko, na au kwa sababu baadhi ya LC50 hazikuweza kuhesabiwa. 