The zip archive contains all of the Aanderaa records from Mooring 2. You can download individual records (and view plots and metadata from individual instruments) by clicking on instruments in the mooring diagram shown in the previous page.
The term "vertical variation" used here refers to variation along the mooring line, rather than simple variation in depth. The extreme blowover experienced by the mooring makes it difficult (but not impossible!) to estimate the actual depths of the instruments.
From here you can move up one level.