/A exch def phase 90 eq phase 270 eq or not{A 49.29348 lt A 180 gt A 196.273450852 lt and A 360 gt A 368.8301 lt and A 540 gt A 545.9907 lt and A 720 gt
'NAO phase' set grid xtics ytics lt 0 lw 0.5 lc rgb "grey95" set style data lines plot 'nature14518-f2_plot.csv' using 1:5:6 w filledcurves lt rgbcolor
29348 lt A 180 gt A 196.273450852 lt and A 360 gt A 368.8301 lt and A 540 gt A 545.9907 lt and A 720 gt A 724.5217 lt and A 900 gt A 903.6281968 lt and