What does this measurement mean?

Hi, I have done some measurements with Sonarworks in 2 different studios (please see attached files). In "studio1", the bigger studio, it looks like Sonarworks detects a huge dip around 90-100hz (about 12db) and "studio 2", is a bit more flat with a 8db boost around 100hz. Can anyone here maybe give me some sort of advice based on the 2 screenshots, what to do with the room regarding acoustic panels and/or what’s wrong with especially studio 1 with the 12db dip? Screenshot: https://ibb.co/THnwhdG Thank you