Syngenta AG (SYT)

Constant Exchange Rates

We compare results from one period to another period in this report using variances calculated at constant exchange rates (CER). To present that information, current period results for entities reporting in currencies other than US dollars are converted into US dollars at the prior period’s exchange rates, rather than the exchange rates for this year. See Note 30 to the consolidated financial statements for information on average exchange rates in 2005, 2004 and 2003. For example, if a British entity reporting in pounds sterling sold £1 million of products in 2004 and 2003, our financial statements would report US$1,818 million of revenues in 2004 (using 0.55 as the rate, which was the average exchange rate in 2004) and US$1,639 million in revenues in 2003 (using 0.61 as the rate, which was the average exchange rate in 2003). The CER presentation would translate the 2004 results using the 2003 exchange rates and indicate that underlying revenues were flat. We present this CER variance information in order to assess how our underlying business performed before taking into account currency exchange fluctuations. We also present our actual reported results in order to provide the most directly comparable data under GAAP.

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We compare results from one period to another period in this report using variances calculated at constant exchange rates (CER). To present that information, current period results for entities reporting in currencies other than US dollars are converted into US dollars at the prior period’s exchange rates, rather than the exchange rates for this year. See Note 30 to the consolidated financial statements for information on average exchange rates in 2004, 2003 and 2002. For example, if a British entity reporting in pounds sterling sold £1 million of products in 2004 and 2003, our financial statements would report US$1,818 million of revenues in 2004 (using 0.55 as the rate, which was the average exchange rate in 2004) and US$1,639 million in revenues in 2003 (using 0.61 as the rate, which was the average exchange rate in 2003). The CER presentation would translate the 2004 results using the 2003 exchange rates and indicate that underlying revenues were flat. We present this CER variance information in order to assess how our underlying business performed before taking into account currency exchange fluctuations. We also present our actual reported results in order to provide the most directly comparable data under GAAP.