- Large dots - days when both PRCP and NAM were "extreme"
- Small dots - days when PRCP, NAM, or both were not "extreme"
- Red horizontal line - threshold for extreme high NAM
- Blue horizontal line - threshold for extreme low NAM
- Grey thick vertical line - mean daily PRCP for all days, including those with zero amount
- Black thin vertical line - threshold for extreme PRCP
- Yellow vertical-to-curving diagonal line - least squares best-fit regression line for PRCP vs NAM, calculated using all days with observations, including those with zeros amount
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