The trunk analyzer does not tell you if all the members of the first trunk group were ever all busy at the same time, that is not its' purpose. List measurements will tell you that, summary will tell you the busiest hour in the past 24 and hourly (by trunk group) will tell you everything that happened in the last 24 hours. The analyzer will tell if you need more (or less) trunks depending on the
average traffic load the trunk group is carrying during the measured period. On Monday you always have too many trunks
If you want to force traffic to the smaller trunk group, go to the signal group and find the two T1s with Interface ID 2 and 3, put those in the other trunk group. This should give you some traffic statistics there.
If I were interested in my trunk usage yesterday, I would use the list measurements hourly report for each trunk group. That way I would not only know how busy the trunks were but at which time of day they were busiest.