<prompt> Translate the following text to EnglishUchambuzi huu ulibadilishwa wakati ilibainishwa kwamba mpango wa muda, ambao ulianza Januari 1, 1995, ungechukua miezi 30 badala ya miezi 18, na kulikuwa na mabadiliko katika gharama ya makadirio ya majaribio ya kudhibiti amana na kuongeza, katika sheria ya mwisho, majaribio ya maonyesho ya amana inayohitajika ili kufuzu mafuta ya majaribio kwa madhumuni ya majaribio ya vyeti.  <response>: This analysis was revised when it was determined that the interim program, which began on January 1, 1995, would last 30 months rather than 18 months and there were changes in the estimated cost of deposit control testing and the addition, in the final rule, of a required deposit demonstration test to qualify test fuels for certification testing purposes. 