That's a bad sign. I have really high ambient temps in the summer. Lots and lots of flow, but I take 90+degree temps in the summer and exhaust 100+degree heat at times. This makes me think I have no hope if I buy these and try to run them through this summer. AC is not an option.
PCB:
29-45-32-47
32-47-37-54
30-44-38-53
Chip:
44-60-47-62
47-62-52-69
45-59-53-68
Temps for my T15 at 75ºF ambient intake temp, normal mode. You may have more overhead, temp ceiling-wise, if you go with the T15.