The median trends are also consistent across different observational products and choice of threshold concentrations (Fig. and Table ). WOD hosts nearly an order of magnitude more nutrient observations than GO-SHIP, but these observations were collected with a diversity of protocols. Nonetheless, WOD similarly shows overall shoaling and deepening trends of the 5 nitracline and phosphacline, respectively (Table ). The GLODAPv2.2022 adjusted product also shows that any measurement bias with time has little influence on the median trends (Table ).