<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Dear Sir/Madam,<div class=""><br class=""></div><div class="">I am using v4_r4 to do some analysis these two days, but I noticed that in the <a href="https://ecco.jpl.nasa.gov/drive/files/Version4/Release4" class="">https://ecco.jpl.nasa.gov/drive/files/Version4/Release4</a> directory there is no /nctiles_grid directory anymore, but it seems that v4_r4 and v4_r3alt are using the same grid file, that ECCOv4r3_grid.nc file still works.</div><div class=""><br class=""></div><div class="">But while I am calculating the heat transport using ecco_v4_py package, it seems that there is no maskW and maskC and maskS in the ncfiles anymore. Since this is the first time I use this dataset, I don’t know how is the maskC looks like before, so do you have any idea about how to solve it? </div><div class="">Or I should generate the **_dataset.maskC with ecco_ds.hFacC by myself?</div><div class=""><br class=""></div><div class="">Best,</div><div class="">Zelun</div></body></html>