Three more quality tests of stations in the ACORN-SAT series have been completed:
The test measures the deviation of the trend of the series from its neighbours since 1913 (or residual trend). A deviation of plus or minus 0.05 degrees per decade is within tolerance (green), 0.05 to 0.1 is borderline (amber), and greater than than is regarded a fail (red) and should not be used.
|Cape Otway Lighthouse||-0.17||0.02||-0.05||0.01|
There are more inconsistent stations among the raw CDO data — as would be expected as it is “raw”. Howover the standout problems in this small sample are in the ACORN-SAT minimums.
Results so far suggest the Bureau of Meteorology has a quality control problem with its minimum temperatures, with almost all borderline residual trends and very large deviations from the neighbours in Rutherglen and Deniliquin.