I ran a DE at Pocono in late May. Ambient temperature was 52 degrees. The first session was cool, overcast, and dry. After the first session, I adjusted my hot temperatures to 38F and 39R. The next session was very wet, I did not change pressures and found the PS2s very good in the wet. The following morning I checked cold pressures and the fronts were about 32 and rears about 33.