PIVOT query in Oracle

Pivot query in Oracle 

report generated each hour wise   for zone and circle in the following query

 select *
    from (
   select  ZONE,CIRCLE,TO_NUMBER(to_char(ococ_dt,'hh24'))  grp,count(*) cnt
    from OCOC_CAF_JAN2022 
      group by  ZONE,CIRCLE,TO_NUMBER(to_char(ococ_dt,'hh24'))
               )
   pivot(
    sum(cnt)
     for grp in ( 0 as "00-01",1 as "01-02",2 as "02-03",
                  3 as "03-04",4 as "04-05",5 as "05-06",
                   6 as "06-07",7 as "07-08",8 as "08-09",
                   9 as "09-10",10 as "10-11",11 as "11-12",
                     12 as "12-13",13 as "13-14",14 as "14-15",
                       15 as "15-16",16 as "16-17",17 as "17-18",
                       18 as "18-19",19 as "19-20",20 as "20-21",
                       21 as "21-22",22 as "22-23",23 as "23-24"
                   ) )
   ORDER BY 1,2;

Output