The fmt_engineering() formatting method should be added to Great Tables. It would be a good complement to the fmt_scientific() formatter. The notation could take either of these forms: m x 10^n or mEn. The mantissa (m) is a number between 1 and 1000 and the exponent (n) is a multiple of 3. For example, the number 0.0000345 is written in engineering notation as 34.50 x 10^-6. This notation makes it easier to compare numbers that are on very different scales.