———— Now, the contribution from Teapot to these measurements are -- well, we worked out a sort of a maximum velue for this cone tribution merely on the basis of taking the strontium 90 fission yield for the two series and saying, that Teapot came out during the period of aix months, All of the strontium 90 landed over the world and if it did so, it would make a certain contribution to this and if we subtracted this contribution we get some=- thing like this (indicating on the board) which again seems to indicate more of a levelling off, This is an extreme Teapot contri- bution, this 1s ignoring it and the truth ig probably in between, but there is evi- dence of a levelling off, but there is still a contribution and this is from Castle which was March of 1954, We have a couple of "fudge" factors in here, This only accounts for perhaps, well, actually that value is 3.72 per cent and this 4s about 3 per cent (indicating). As E4 Hardy is going to show a little later we have some reason for this, 199

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