Yep, that's clearly different. My Bangle.js 2 has about 63 PPM at 19 C and yours is around 71 PPM.
btw, the graph I showed earlier was made with LibreOffice Calc: I measured some temperature/PPM pairs, made a chart of them in LibreOffice Calc and added trend line (polynomial, degree 2).
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I followed your steps, they worked perfectly. Here are my numbers.