OK, I was able to find some examples:
First, my main point was that the list you see on the TFRRS do not carry every performance, it may be missing some. I am now learning to state that the list is a qualifying marks list prior to the NCAA Champs meet. Marks may still make their "database," but not necessarily their list.
Here are the examples...
1) The 2017 NCAA outdoor champs results are not on the TFRRS list, because I have learned the list is a qualifying list...so I am guessing its frozen once the NCAA Champs qualifying period is over. These times can be found under the runners TFRRS profile (in the "database"), but not on any TFRRS list that I am aware of.
Neil Gourley 3:40.52, NCAA Champs, 4semi1..... his best listed on TFRRS is 3:42.82 from 4-21-17
Vincent Ciattei 3:44.83, NCAA Champs, 9th final.... his best is listed on TFRRS as 3:45.38 from 4-21-17
Here is another example of a "missing" mark...
2) James Randon, ran a 3:58.85i at the IC4A on 3-5-16... his best is listed on TFRRS as 4:00.53i from 2-12-16. This is an example of a time, and a sub-4 at that, not being included on the TFRRS list. Why did this not make the list? Perhaps the IC4A was held outside of the NCAA Champs qualifying window. I'm not sure.
So, with these notes, looking at the TFRRS list to count how many broke this or that time will give close to a 100% report, but keep in mind the list are qualifying list leading up to but not including the NCAA results and any meets outside the qualifying window (IC4A example above?), or any meets/results that for some reason didn't get reported (but I found no examples of this unless that 2016 IC4A is an example). However, I do recall in the past examples of this, but I am now thinking the omission was noticed and the results were later added into the list. My recollection was that it was a meet in New York (Millrose or Collegiate Inv?)
Also, if you omit an altitude conversion time, or a flat track conversion time, keep in mind that the runners "second best performance" may actually meet the criteria you are looking for. For example, if you are looking for indoor sub-4's and runner X ran a 4:02 at altitude, and it coverts to a 3:57 mile time, and that 3:57 is on the list, you would omit it...but if their second best performance was a 3:59 at sea level on a normal 200m banked track, well that time meets your criteria, so you would be off by one.