We found the ring heater RTD readouts to be inconsistent: some calibrated in Celsius, some in Kelvin. We changed the parameters in the RH calibration screen so they all read in Kelvin. As a reminder, each test mass ring heater nominally has a RTD (temperature sensor) attached to the lower heater segment. However, the RTDs for ITMX and ETMY are broken (known issue) and read back zero. Currently the ETMX RH RTD reads 277.5 K, the ITMY RTD read 278.9 K. The ITMY RH has 0.85 Watts on each segment; ETMX is zero RH power.