cpp1

Samping interval decreased from 10 minutes to 1 minute in early 2020;
The 10-minute data file reflects this change in sampling rate.

Note that, perhaps around 2015, the data has become noisy due
to the long, 100-m buried signal cable between the creepmeter and
the telemetry.  Various treatments of the data have been attempted
to minimize the noise; the best solution is to move the telemetry
closer to the creepmeter, but as of Aug 2022, that has not been done.

Oct 10, 2009 -- replaced LVDT
Jan 1, 2020 --- Install carbon fiber rod
Jan 22, 2020 -- change sample interval from 10 min to 1 min
Jul 7, 2020 --- Replace LVDT