netcdf-doc 1:4.7.3-1 (amd64 binary) in ubuntu focal

 NetCDF (network Common Data Form) is an interface for scientific
 data access and a freely-distributed software library that provides an
 implementation of the interface. The netCDF library also defines a
 machine-independent format for representing scientific data.
 Together, the interface, library, and format support the creation,
 access, and sharing of scientific data.
 .
 This package contains documentation for the NetCDF library in a
 variety of formats.