It appears there is no menu option to modify the number format on a contour plot legend.
When you have very small numbers that are better represented with scientific notation, you cannot directly plot them without creating another column and scaling the value appropriately.
![ChesterKnurek_0-1660664686266.png ChesterKnurek_0-1660664686266.png](https://community.jmp.com/t5/image/serverpage/image-id/44812i8A248808A7FFADD8/image-size/medium?v=v2&px=400)