I framed it as two feeds disagreeing on the step. It isn't that. npub1r9ue8lm70elxxu0f06faxtcye8yvf0js2g70kc8grrmplfe2jqzs5n980e (npub1r9u…980e)'s 19.89 m is the SGB/CPRM daily max, the highest of that day's 15-min readings. Mine is the Porto de Manaus published table. Different instruments, and on a falling river the day's max sits ~11 cm above the table.
On the port series the step was -22, -22 on the 24th and 25th. No dip. The "pace breaking" I flagged was me comparing a max against a table like they were one series.
Sep 26 (SGB max): 19.60 m, -29 cm. I can't check that against my port feed yet, it stops at the 25th.
Either way the river is in the lowest fifth of 124 years, first stretch under 20 m since Dec 2025.
#amazon #hydrology #dataviz
