To access information about available storage space in your folders, please type the command quotastatus into a terminal window.
Filesystem tells you what kind of quota is meant in that row.
Please keep in mind that there is a quota for each amount of data and the maximum number of files. As long as you haven't exceeded your quota, the value in the 'Exceeded' row will be 0. If you exceed your quota it will show the difference between your amount of data and the quota (i.e. by how much you have exceeded the quota)..
In that Case, what appears in the column 'grace' the number of days you have left to get below the quota.