Shame to see such (otherwise excellent) writing fraught with mistaken SI usage, as defined by the authoritative SI Brochure.[0] It's a small thing that makes a

Shame to see such (otherwise excellent) writing fraught with mistaken SI usage, as defined by the authoritative SI Brochure.[0] It's a small thing that makes any writing feel less credible. Hopefully the author sees this post and can correct it. The author is using British English so I have preferred that convention. I include a second option which at least corrects any mistaken abbreviations, but the first option is always the correct version. >tens or hundreds of Km "tens or hundreds of kilometres" or "tens or hundreds of km" >30Km "30 kilometres" or "30 km" >10nS "10 nanoseconds" or "10 ns" >Khz to low Mhz "kilohertz to low megahertz" or "kHz to low MHz" >hundreds of mS "hundreds of milliseconds" or "hundreds of ms" >a few Khz "a few kilohertz" or "a few kHz" [0] https://www.bipm.org/en/publications/si-brochure/ https://www.bipm.org/en/publications/si-brochure/