Agreed it needs to be 180 degrees or warmer and those numbers are very low but all uniform so I'm guessing you didn't get the car warm before testing or one would be way off if there was something wrong.
Procedure for pushrod:
-Get engine temp to operating temp
-Remove all plugs (wear good gloves, the headers/engine will be yoga balls hot)
-Disconnect coil wire
-Install gauge on 1st cylinder
-Crank engine for about 10 seconds
-Move gauge to 2nd cylinder
General rule is less than 10% variance between highest and lowest reading.
2000 Mustang GT Steeda #0048
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.