Seems modern puppies store their temperature data in /sys/class/hwmon. These offerings use the figure for the first 'Core' found. These work (FOR ME) in Bookwormpup64-10.0.6, Fossapup64-9.6-CE4, s15pup64_22.12-231209.
Must restart X after install to activate. Use at own risk.
1. I made a later pmcputemp 64bit (v0.9g). No obvious memory leak in this version.
2. I made a revision of poorercputemp 64bit (v0.1e). Note this only displays 2 digit temperature.