On my K1 with Yamiya tank the stripe is 97mm at center, as measured from top of stripe to the edge of the fuel filler neck directly above.
The rear point of the stripe is 96mm directly up from the lower rear corner of the tank.
The front lower corner of the stripe is 153mm directly above the front lower corner of the tank.
The front vertical edge of the stripe is 18mm measured straight back from the front edge of the tank at the raised seam/lip.
I measured these using a piece of nylon web/strap laid on the tank, marked that, and measured distance with a caliper. So the measurement is with the contour of the tank as though it were flat.
