maybe I did a :16 length of free?

Okay, I had to adjust my schedule today, so did a noon swim for the first time in a long time. I don't think they're used to serious swimming then. . . it took the first ten minutes for them to realize that it was Monday, and therefore, a "lane swim at noon" kind of day, and kick out the tarzan-rope-swingers and get the lane ropes in. grr. But the cute perky guard was clearly bored, and kept some times on my "race pace" 100s and gave me good feedback. yay. Too bad that my oxygen-deprived brain can remember neither her name nor the numbers she gave me. My best guess (on the times) is below.

Warm-up (500m): 100 kick, 100 free drill (double catch-up), 100 breaststroke drill (two pulls one kick), 200 freestyle.
Feel good (400m): 8x50 free on :55. First three were pull; next three were full stroke, thinking about hand entry and pull; last two were full stroke feeling pretty good.
Race pace (500m). 5x100, 3:00-3:30 rest, with dive. Alternating 100m free and 100m IM.
First 100m free: no time
First 100m IM: 1:40
Second 100m free: 1:30. perky guard noticed that my final 25m was 5 seconds slower than the others. Good feedback: kick it up a notch on the final 25m.
Second 100 IM: 1:40. perky guard noted that my back and breast were both at :30, that my fly was :15, and the final free was :25.
Third 100 free: 1:26? or 1:29? perky guard noted that my final 25m was on :20, as was the second 25m. Third 25m was on :25, and the first 25m was either :19 or :16. Logical deduction: if my 25m fly was really on :15, then it's possible, with a good dive, that my 25m free could have been on :16, therefore bringing my 100m free in at 1:26. Realistic deduction: after four 100s on race pace, it's unlikely that my fifth was significantly faster than the others. And I haven't done enough timed 100s recently to even guess. who knows? What I do know is that I kicked like my life depended on it for the final 25m.
Recovery/ warm-down (325m): 2x50 backstroke, 100m free, 2x50 breaststroke, 100m free, 25 back.
===1725m