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<br />I <br />I <br />I <br />I <br />'I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Figures 14a, 14b, and 14c show a sequence of cloud <br />photographs taken of the same cloud complex. In the first photo <br />one can recognize the new cells developing on the right-front sector. <br />These cells were seeded and as the next two photos show eventually <br />grew vertically and merged into the surrounding cloud mass. <br />Figure 15 is a time-height cross section of the radar <br />echo for this complex (derived from sequential Rill measurements, <br />see Section 4. 4 for explanation). Interpretation of this crossection <br />indicated several precipitation surges which correlate well 'with <br />the seeding events. <br />In summary, the analyses of the Operational Seeding <br />events suggest that the histories of radar echo patterns are in <br />general agreement with the expected responses based on our <br />physical hypothesis and with the responses measured during the <br />Experimental Period, which are described in more detail in <br />Section 5. <br /> <br />42 <br />