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<br />l:JCl'l <br /> <br />MR. JENNINGS: <br /> <br />, <br /> <br />happened with the long term records in the <br />area such as Sterling inside the area, Akron, <br />Colorado just outside, and Sidney, Nebraska <br />just outside, we would get the frequency <br />distribution or the number of times in which <br />given amounts of precipitation occurred. Of <br />course you are aware that this askewed dis- <br />tribution and that on the average, the aver- <br />age value is something higher than the most <br />common value. Again if we plot on here the <br />1959 data we will come up with some point <br />either below the average, above the average, <br />or hopefully far enough above or far enough <br />below that we could attach a confidence <br />statement to it. This would give us a pic- <br />ture of what has happened so far as preci- <br />pi tation'- anomalies are concerned in and near <br />the target area. <br /> <br />I <br /> <br />The next item is a comparison of the <br />relations between' precipitation and hail <br />occurrence. He're we. have plotted the hypo- <br />thetical relations, and please let me em- <br />phasize that these are hypothetical rela- <br />tions, these are not what we have found, <br />the relations between precipitation and hail <br />energy. I think in this case it might be <br />well to tell you a little bit more about <br />what we mean by hail energy, just what pre~ <br />cisely is involved. This is different from <br />hail days or size of hail stones. Paul <br />has done some laboratory work on this so <br />I will turn it over to him and let him <br />describe this to you." <br /> <br />'~en we decided we were going to in- <br />vestigate this, we decided first of all <br />that just the fact that it hailed on a day <br />was not nearly good enough for our work. <br />Also we decided the crop damage as such <br />depended so much on the kind of crop and <br />the state of the crop, that would not be <br />a thing to use either. So what this hail <br />energy means, it is the energy per square <br />foot that the hail storm delivers. We <br />think this is a good estimation of the <br />damaging ability of hail, not necessarily <br />the damage it does but we measured the <br />intensity or the damaging ability of it. <br />We can get this both from our cooperative <br />observers and from our hail indicators. <br />From that we have been able to determine <br /> <br />I <br />