Saturday, June 15, 2013

Data Review

I hear many times that the "data" has not be scrutinized or analyzed at the Health Department,
The strange thing is that i did, back in July of 2012.
Not that it was a perfect analysis, but i compared all wells tested, wells showing the presence of pesticides with those not showing pesticides present.
What is this you say? show me?
Here is a general overview:

All well results since 2008 to 10/2012:
  House Built Well depth well distance pool Onsite   Current land layout Past Land use
     
Average 1959 248 34   2 2
Max 2008 1100 200   6 6
Min 1700 30 0   1 1
count 1001 168 112 94 646 639
median 1962 195 25     2 1

The numbers for past land use and land layout are as follows:
ID # Current Land Past Land Use
1 Flat undeveloped
2 gentle slope Forest
3 moderate slope Animal Farm
4 steep slope Farm
5 Rolling Hills Landscaping buisness
6 Hilly Industrial


Data for the next categories are until July 2012, not Oct 2012
wells with pesticides found:
  House Built Well depth well distance pool Onsite   Current land layout Past Land use
     
Average 1952 210 26   2 1
Max 2007 800 81   4 4
Min 1730 30 0   0 0
count 149 35 34 11 72 69
median 1960 120 20     2 1

Wells without pesticides found:
  House Built Well depth well distance pool Onsite   Current land layout Past Land use
     
Average 1959 260 36   2 1
Max 2008 1100 200   6 4
Min 1735 30 0   0 0
count 640 102 66 47 325 300
median 1963 220 25     2 1
there are slight differences, but not statistically significant not do the difference correspond to changes in the use of the pesticides.

Sadly this does not show any way of determining if a home might have an issue or not - it varies by factors that we cannot determine, of course if someone would develop a time machine, we could see what was happening to cause these problems.  i do not think it would be that surprising.
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