<prompt> Translate the following text to SwahiliAn analysis for oxides of nitrogen reveals a cost effectiveness of 163 per ton or 66 per ton at net present value.  <response>: Uchunguzi wa oksidi za nitrojeni unaonyesha ufanisi wa gharama ya 163 kwa tani au 66 kwa tani kwa thamani ya sasa ya usawa. 