500 m was used as thickness of the AAIW layer. The transport variability M v was calculated from the standard deviations of the box means. Information on boxes with less than 30 float days is given in the last column. Maximum depth H s of the subtropical gyre in different regions estimated with models of the ventilated thermocline using different depths H e of the wind-driven layer at the eastern boundary. The mean densities of the layers 1 to 4 are given in the column .
H e is the depth of the wind-driven layer at the eastern boundary.
LPS represents the model by Luyten et al.