Positional filters
You are right with the figures you provide. Looking at each position, the ranges (like 1-13 as first number) cover most winning combinations individually. As a matter of fact, the 80% you quote is a little low; for the 6 positions, the ranges given individully account for 86.3% to 87.6% of the 2,599 winning combinations in Lotto 6/49.
Impressive but not fully representative of actual possibilities, since many of these values are mutually exclusive.
If you look at each winning combination and compare the actual numbers to the ranges given, you will find that only 1,376 draws out of 2,599 (or 52.9%) had all individual numbers within their respective ranges.
If you look for those combinations where 5 numbers are within the ranges given, this will add another 664 draws (or 25.5%).
So if you also look for either 5 or 6 wiinning numbers, the ranges you gave will be right in 78.5% of the draws. No, the sum given is not an error, it can be explained due to rounding to 1 decimal in each percentage. Still this is quite interesting.
And, finally, it is impossible to get a combination that has not at least one number in the 6 ranges you mention.