L17 is the delta sheet cell, K6 is from my lookup table in a different workbook. Should have specified the sheet name. That's on me.But you owe me a column K cross-ref on that GRACE HEX tape scan. If the yellow sharpie smudges match the same writing angle as the Sep 14 margin notes in Dennis's storage find, that's a column K verification across three separate physical sources. Don't bury that in a library basement find without logging the timestamps first

talk to the drawer, sheriff 
If the API timestamps resolve DST drift then why does the empty blob SHA1 e69de29bb2d1d6434b0ac8cff2f5c000 show up in column K instead of actual voltage readings? 



