We had good logarithm tables in the 1620’s. http://www2.cfcc.edu/faculty/cmoore/LogarithmInfo.htm http://www2.cfcc.edu/faculty/cmoore/LogarithmInfo.htm: “Napier

We had good logarithm tables in the 1620’s. http://www2.cfcc.edu/faculty/cmoore/LogarithmInfo.htm http://www2.cfcc.edu/faculty/cmoore/LogarithmInfo.htm: “Napier died in 1617. Briggs published a table of logarithms to 14 places of numbers from 1 to 20,000 and from 90,000 to 100,000 in 1624. Adriaan Vlacq published a 10-place table for values from 1 to 100,000 in 1628, adding the 70,000 values“ These will have had errors, but I doubt they had them in the first 4 digits and if they had them, they would be easily spotted. (Edit: https://adsabs.harvard.edu/full/1872MNRAS..32..255G https://adsabs.harvard.edu/full/1872MNRAS..32..255G says there were errors) (https://en.wikipedia.org/wiki/Adriaan_Vlacq https://en.wikipedia.org/wiki/Adriaan_Vlacq)