[sqlite] number problem with 3.2.8

[Lloyd Thomas]

I am using sqlite 3.2.8 which is included in PHP5.1. I seem to be having a 
problem doing queries where with '>' to search a number.
for instance if I do the following

select  ring_time fron calls where ring_time > '10';
I get the following results
3
6
3
6
3
6
2
3
3
3
2
etc.
Why? 
This row is varchar. Is 3.2.8 not able to work with numbers stored as varchar?