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Box-Whisker plot of GWS anomaly for all the seasons at 4 largest basins. The extent of the box indicates the inter-quartile range (25 to 75th percentile) of the data; horizontal line within the box specify median values; black filled circles inside the box show mean values; upper and lower limits of whisker indicate ±1 σ deviation from the mean; top and down black filled stars showing 99% and 1% data, respectively
