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N. Olr, onto the standardised 20-90-day filtered NOAA OLR reference index of CCER filtered NOAA 991 OLR (colour), 925 hPa geopotential height (contours) and wind. Only 90% significant NOAA 992 OLR regression coefficients are displayed. For a better clarity all wind and geopotential height 993 regression coefficients are displayed. Vector scales are displayed. (d) Evolution from To-10 days 994 to To+10 days of the regression coefficients of Fig.16a left averaged over 2 and for the same variables (red " CA, filtered WIG NOAA OLR and 997 blue " CA " respectively) averaged over 2.5°S-7.5°N/10°E-30°E. (e) Same as (d) but for Fig.16b 998 middle regression coefficients and CCER instead of WIG. (f) Same as Middle but for Fig.16c right 999 regression coefficients and from To-20 days to To+20 days, p.996, 1000.