I ran a curve awhile back on my civie (non-diabetic) awhile back and here are the results she gave me.
Pre-breakfast: 45 (fed right after test)
+2 = 57
+4 = 45
+6 = 49 (fed lunch after test)
+8 = 55
+10 =47
+12 =46
Hope that helps.
Mel, Maxwell, Musette & The Fur Gang