How to Get the Size of a Table in CnosDB

Question

The new version of CnosDB seems to be compatible to SQL. I am able to create a table as follows according to the manual:

CREATE TABLE air (
   visibility DOUBLE,
   temperature DOUBLE,
   presssure DOUBLE,
   TAGS(station)
);

But how could I get the size of each table? Is there anything similar to infomation_schema in the MySQL world?