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<br />iiIlI <br /> <br />.... <br /> <br />selected from other years to give a wide range of historical storms con- <br />sisting Oif from very small to very large storms. The historical period <br />includes storms which occurred in months other than January and February <br />but it is felt that this does not introduce any serious bias since small <br />or large storms may be observed. during any of the winter months. <br /> <br />A total of 27 raingage locations were examined to detennine the <br />precipitation pattern both within and outside of the expected areas of <br />effect. The locations of these raingage sites are listed in Table 3 and <br />are plott,ed on Figure 3. <br /> <br />As the table and figure indicate a total of eight raingage sites were <br />designated as control stations. These are numbered one through eight and <br />are all located to the south, southwest or west of the target area to <br />insure tha.t the control was unaffected by seeding. The winter stonn track <br />is such that storms entering the county move from a westerly to easterly <br />direction.. The control stations are indicated on Figure 3 as a dot within <br />a square [!l <br /> <br />TIIOSE:l raingage sites indicated by a dot within a circle 0 and m..unbered <br />nine through 16 are considered to best represent the precipitation regime <br />wi thin and near the expected primary area of effect. Raingage sites are <br />generally sparse in much of the intl~rior of Santa Barbara and San Luis <br />Obispo Counties and no gages were a1railab1e in the section northeast of <br />Santa Maria. <br /> <br /> <br />The remaining eleven sites (indicated by a dot e) are included to <br />allow analysis of the precipitation ratios beyond the primary area. <br /> <br />Also included in Table 3 is a surmnary of the analysis of a compari- <br />son of precipitation from seeded storms to that from not-seeded storms. <br />This basic test statistic is the double ratio: <br /> <br />4-4 <br /> <br />