I am trying to fill in a table that needs to look at two different columns to
see whether to to count the data. For example, here is some data:
A B
1 10 3
2 40 2.5
3 71 4
4 124 3.5

Now to create the table, I want to know how many times something occurs
between values looking at both conditions with column B data across the top
and column A data along the veritcal, as below:

0-1 1.1-1.5 1.6-2 2.1-2.5 2.6-3 3.1-3.5 4 or more
0-40
41-80
81-120
121-160

Any ideas? I've tried erally long arrays but it's getting really comlicated
as I add more data.