The shift information is displayed on the LCD in 0.5mm increments, but when it's sent to C1, it's recorded in 0.1mm increments.
As for the rotational increments, both the screen and the data sent to C1 are in 3° increments. This is where I was wrong in my first comment, I originally thought C1 was recording lens rotation in 1° increments.
Aah, you're right, 249° is a multiple of three, I was under the impression that neither shift nor rotation values were identical between the EVF/LCD and C1.
I did a shoot using C1 and a GF 30mm T/S a couple of days ago so I was curious to see whether the results of your observation reflect the ones on my setup. As expected: it's identical.