I take it you are not using HiLo count but some other values, because I can't match these numbers up. However, I think, the first number is for Early Surrender, the second number is for Late Surrender. The letter R after a number means Reverse the meaning, in other words, normally you surrender if the count is higher than the index, with ones with an R, you would surrender if the count is lower than the index.
In any legit program's HELP file, you can find the following :
..An index is followed by 'R' if it is reversal. For example, an index 8R* for splitting 8,8v10 up means that one should split 8,8v10 up if the true count is LOWER OR EQUAL to 8.
So, 17 vs A 1R means that you should Surrender if your count is +1 or lower. In 15 vs A -4 21R, you should Surrender when the count is anywhere from -4 upto +21. (I don't know how you generated those indices, by the way, so I'm just commenting on their meaning. I have no way of knowing whether they are correct ot not.)
PS : There's a typo, by the way, in the SBA HELP file. In the above Surrender example, the text says "...if the true count is LOWER OR EQUAL to 10"!