Chris de Freitas: Global warming: Court no substitute for science - Opinion - NZ Herald News

Temperature trends detected are small, usually just a few tenths of one degree Celsius over 100 years, a rate that is exceeded by the data's standard error. Statistically this means the trend is indistinguishable from zero. Moreover, trends and temperature differences justified to one or two decimal places and significant figures are unreliable since the amounts are greater than the accuracy of the data allows, and multiple averaging of measurements does not make it more reliable.