Mean TEMP on extreme negative (low) PNA days

Mean TEMP on days of extreme negative PNA   PNG: (1200x900) | (640x480) Open PNG in new window: (1200x900) | (640x480)

Compare to all days mean TEMP   PNG: (1200x900) | (640x480) Open PNG in new window: (1200x900) | (640x480)

Difference when also extreme positive NAM PNG (1200x900) (640x480) Open in new window (1200x900) (640x480)	Difference when also extreme negative NAM PNG (1200x900) (640x480) Open in new window (1200x900) (640x480)	Difference when also extreme positive CTI PNG (1200x900) (640x480) Open in new window (1200x900) (640x480)	Difference when also extreme negative CTI PNG (1200x900) (640x480) Open in new window (1200x900) (640x480)