had the ctx out for 2hrs last nite. was 35 hen i went out at 3and dropped to 28 by the time it got dark at 5. everything seemed to run fine. the only thing i noticed was , i was running gh program auto 3 and had quarter readings 20-45 ,18-45 , 12-45 , ,, ferrous readings were all over but co number pretty stable.. but the ground was also saturated. so maybe thats why. i had hit the area hard before but figured i d go over it again being so wet. and the coins were just jumpin outta the ground..... some days the dry ground they seem to jump out at ya and other days its wet... i had to put response back to normal instead of long , to many targets showing for long. ended up with 12 ,quarter 10 dimes hallf dozen pennies. all 5 inches to 9,,, where guys and myself had been before. so far the 3 times ive had the ctx out in the cold its handled it fine.