Thank you all. Very educational. @Craig: Yes, I was aware of that construct, but I also wanted to reference the formats individually (without indexing). Not a biggie but I was curious why my construct wasn't working.
Further insight: my microchip compiler (XC8) uses the first "const" to place the data into program memory. I assumed it would also define the vars as const.
Andreas' construct worked nicely. THANK YOU ALL again. Michael