Oracle Data Guard: Calculating Network Bandwidth

QUERY:

SELECT DT,
SUM(RB*8/3600000000*1.3) Mbps_REQ_A_DAY,
MIN(RB*8/3600000000*1.3) MIN_Mbps_REQ_AN_HOUR,
MAX(RB*8/3600000000*1.3) MAX_Mbps_REQ_AN_HOUR ,
AVG(RB*8/3600000000*1.3) AVG_Mbps_REQ_AN_HOUR
FROM(
SELECT TRUNC (COMPLETION_TIME) DT,
TO_CHAR (COMPLETION_TIME,’HH24′) HH,
SUM(BLOCKS*BLOCK_SIZE) RB
FROM
V$ARCHIVED_LOG
WHERE COMPLETION_TIME > SYSDATE-5
AND DEST_ID=1
GROUP BY TRUNC(COMPLETION_TIME),
TO_CHAR (COMPLETION_TIME, ‘HH24′)
)
GROUP BY DT
order by DT;

——————————————————————————————–
OUTPUT:
========================================================================
DT        ||MBPS_REQ_A_DAY||MIN_MBPS_REQ_AN_HOUR||MAX_MBPS_REQ_AN_HOUR|| AVG_MBPS_REQ_AN_HOUR
————— ———————— ———————— ———————— ————————
20-JUL-12         1.40667756    .092599751               .757330034            .281335512
21-JUL-12         1.36889367    .092398592               .379794318            .136889367
22-JUL-12          .940478009   .072797412               .104935538            .094047801
23-JUL-12         3.23766921    .02369536                .855787065            .202354325
24-JUL-12         2.82066193    .067503673               .848231765            .176291371
25-JUL-12          .845672903   .045166137               .178660352            .08456729