hey all, I'm still very much a beginner, so please excuse me if this is a stupid question, I just can't find the answer anywhere.

On Blackjack Apprentice, they give you the deviations charts and have numbers at which you deviate from basic strategy. The chart is here https://www.blackjackapprenticeship....ck-deviations/

I get that, but how do I know if the numbers mean to deviate at the count and higher, or deviate at the count and lower? For instance, the software tells me when the dealer is showing a 9 and you have a 16, you surrender on a true count of -1 or higher, and then there are other times it's -1 or lower.

I can count a deck in 25 seconds and have basic strategy memorized back and forth, so I'm wanting to move forward with this but don't want to memorize things the wrong way.

Thank you guys!