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Annual Hs Box Plot
A box is plotted for each month of the year that has data. The extents of the black box mark the lower quartile (25% of data values are less than this value) and upper quartile (75% of data values are less than this value), a red line indicates the median, and a dark green line indicates the mean. The black lines above and below the box, the "whiskers", show the extent of the remaining data but have a maximum length of 1.5L, where L is the length in meters from the lower quartile to the upper quartile. Data values that extend beyond the whiskers are "outliers" and are indicated with red crosses.