lets see 2281 over 5 days
we would divide the total CRC's by 5 that = 450 CRC's over 24 hours then divide 450 by 24 that will give you the CRC's per hour = 18.75
Now the tricky bit is to convert CRC errors to errored seconds now on my line 2 CRC's = 1 errored second so your 18 CRC per hour would look like 9 ES/per hour.
But as B*CAT has said it depends on the overall errors over a 24 hour period as thats what the DLM looks at if it's above 1440 ES or 2880 ES then it will take action.