Greg - does https://www.usna.edu/Users/oceano/pguth/md_help/html/vert_datum.htm help any ?
There are some links at the bottom of the article to NOAA info as well... -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/806b2eb3-6665-4158-804a-ecd1351f6eb2n%40googlegroups.com.
