From the things you noticed thread - Glyphs also in the Eva 13 cockpit
glyph next to 13A at the bottom is 10,1 with 90° counterclockwise rotation.
glyph next to 13alpha at the bottom is 10,1 with 90° clockwise rotation.
glyphs on the left and right are still the 10,1.
Left ones are 10,1 with 90° clockwise rotation and mirror effect. (don't know how to explain it in english, sorry)
Right ones are 10,1 with 90° counterclockwise rotation and mirror effect. (don't know how to explain it in english, sorry)
I suppose we don't have to care about the mirrored one and wonder if there is one rotation for greek alphabet and one for latin alphabet.
At least, we can assume that 10,1 is for 1st letter of the alphabet. So, it is an A.