Hmm...that's a good catch and it's not a typo! I didn't notice that. I didn't have my glasses on and I thought that blurry thing behind the numbers was a degree symbol.
I've seen alignment specifications expressed multiple ways including degrees, minutes/seconds, mm, and inches. Since his alignment was done in inches, we'll have to convert the values to degrees to see what those specs really mean.
I'm not completely sure how to do that. Here's the topic on the Corvette Forum...
Converting Toe Inches to Degrees
And here's a calculator:
https://robrobinette.com/ConvertToeInchesToDegrees.htm
I have to finish installing a water softener so someone else take a shot at it...