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. 2016 Feb 17;3(2):150320. doi: 10.1098/rsos.150320

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© 2016 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 9. — Deseasonalized (δ) frequency (days/month) of weather systems from a given direction, during composites of extreme phases of the NAO, ENSO, SC and AOD peaks for several epochs during winter (DJF) months. Values are displayed as simple means with an accumulated uncertainty (details in text). Grey shading indicates confidence intervals (estimated from the KDEs of 10 000 random DJF composites for each direction), whereby the central shaded band indicates values of p>0.05 significance, and the lightest grey shading extends to the p=0.01 confidence level.