Como obter o informações de tablespaces e seus tamanhos... SQL-zado de forma legível, não aquela m. de (+) etc

ora_tablespace_space_ace.sql

select 
  ts.tablespace_name as "Tablespace", 
  round(sum(df.bytes) / (1024*1024), 2) as "Total (MB)",
  round(sum(df.bytes) / (1024*1024) - sum(fs.bytes) / (1024*1024), 2) as "Usado (MB)",
  round(sum(fs.bytes) / (1024*1024), 2) as "Livre (MB)",  
  round(sum(fs.bytes) / sum(df.bytes) * 100, 4) as "Livre (%)",
  100 - round(sum(fs.bytes) / sum(df.bytes) * 100, 4) as "Usado (%)"  
from 
  dba_tablespaces ts
  inner join dba_data_files df
    on df.tablespace_name = ts.tablespace_name
  inner join dba_free_space fs
    on fs.tablespace_name = ts.tablespace_name
--where tablespace_name like 'GISACTP'
group by
  ts.tablespace_name
order by
  "Usado (%)" desc
/