As broilers are kept in large numbers, problems that start small are often noticed (too) late. By recording and evaluating objective house date daily, you can intervene much earlier and avoid problems or expensive treatments.
Recorded parameters are often offset against the standard recommendations of the breeding company. This does give a good indication of flock performance, but it is as important to keep an eye on actual day to day and week to week changes of your own flock.
On top of that, recording data is only the first step in a process. Make sure you regularly analyse the date and compare with the production standard, as well as with previous flocks, earlier weeks within the cycle and with other farms in the region. From that analysis try to improve to go forward with a plan.