Figure 2 shows three versions of the 171 float trajectories.
The trajectories in the top and middle panel are colour-coded
according to the magnitude of the standard deviation of their
AAIW salinity minimum time series. The time series in the
top panel are derived from theWOA salinity field, in the middle
panel from the Argo float observations. Smallest standard
deviations are indicated by yellow, larger standard deviations
by cyan and green; largest standard deviations by red.