—_
20
er
sort of things.
These were disintegrations per
minute per square foot and theirs are in
miliemps per square foot.
We got a vale
ue of this ratio of 1.52 which makes us
feel perhaps that thie is a fairly oonestant ratio,
Now, they have the same papers
and the same pots, the same as we had,
One of the things we were inter~
ested in this is how good our sampling is.
And so, out of these records during this
period we have 61 weeks in which we have
two gummed paper samples and two pot samples
so that we can do an analysis and get an
idea of the sampling variability,
And the
average -— let's take two pot samples ina
week and we have a mean in each week and
—
the mean in all of this period turns out to.
be 1108 plus or minus 389,4 and the mean of
this turns out to be 581 plus or minus 207.1.
So that you see again, the variability in this limited period is about 1.51
An for AR as compared to Ag which ig about
the same value that we had before.
-