Give possibility to calculate the SLA on FB Messenger over all responses, not only the on the first response.

I'd like to know the service level from the first response to the last response. How quick are we to respond to the customer requests. Actually, I can get from Dimelo the Average Time of Response, but I'd like to know how many responses were given within 30 seconds, and how many responses are given after the treshold of 30 seconds. And I want this information on all messages, not only on the first response. Is it possible to display this calculation of the SLA?