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Thanks for your patience doc... Your detailed instructions of how to work with time points as well as time intervals are quite intriguing. I certainly will try your approach. Unfortunately, I still have this nagging question about linking (or not linking) my tables. So far, I had assumed that...

The lower cut off or Tb is critical in several ways: (a) it defines when certain bugs start getting active (emerge from dormancy) – see pest management tables for exact temperatures for specific pests. (b) it determines what values you are calculating. The lower your Tb the bigger your numbers...

http://beaumont.tamu.edu/eLibrary/Publications/Ted_Wilson/LTW31.pdf formulas galore; this paper really goes to great depth http://biomet.ucdavis.edu/DegreeDays/DDhand.htm a “hybrid” approach; it provides a lookup table for constants that you can use together with the basic formula. Pretty...

Statistical analysis certainly will require some form of averaging. In most cases, the goal is to extract a mathematical equation/ expression that then can be “universally” applied to solve problems or predict an outcome. I am more interested in graphing/ plotting and pattern recognition such...

There is an excellent power point presentation on the time issue. Unfortunately, it “only” analyzes a wide range of issues (developer be aware of this and that...) but does not provide hints what the solution might be. [PPT] Designing, Building and Using Time Dependent Databases File Format...

Doc_Man, I honestly appreciate your help. But this is getting far too complex. If I have to use calculus to store simple 2-digit data – it cannot get more basic than my set of observations – than perhaps we are pushing way beyond the limits of what the software can handle. In retrospective, I...

Could you give me a literature reference that specifically explains mathematical normalization. I tried a Google search but could not find anything relevant. All theses millions of articles talk about is, redundant data and some sort of data dependencies. Just as very book ever written seems to...

the tables are a mess. I try again as an attachment (Word file: tables A-D)

I certainly can compress the date and time fields into a Modified Julian Date Number: “54,100.125” stands for “Monday, January 1, 2007, 3 p.m.” But then what ? Below are 4 sample tables: Table A has two record per day/date (morning and evening observations) Table B has 24 records per day/date...

I wish it would be so straight forward. Currently, I have no other redundancies than the date - nothing really to normalize unless I wanted to throw out some raw data. The Access datasheet would have to be some 65 columns/ fields wide. The crux - again - is in the time dimension. While the date...

While much of the discussions here are out of my league, this may just be the place to finally get some help. I have a hobby weather station and I am also into gardening. Over the years I have accumulated a fair amount of data/ observations which are currently in assorted Excel spreadsheets &...