ADXL345 accelorometer: what kind of numbers should i expect tapping sensor?

im still getting data that im not sure is accurate or not. I know some of you other guys have played with these, could anyone post some excel values they are getting?

im going to order and hook up another one. i think this one may have some problems. it will read 0 G and then when i touch some of the VIAs on the pcb where my wires are connected, it will read consistent .11 G , even if the accelerometer did not move at all (still held down to the table).