Daniel Solis reports for The Power Hour:
A very unusual deletion can be observed in the archived data of HAARP instrument readings from the day before the Haiti earthquake. Perhaps it is a matter of time until it will get fixed with a simple copy-paste operation, but I have made screen shots of it).
Set the date in “Chart Archives” below the today’s graph to 2001/Jan/11 in the window below the graph and see for your selves. It is the only instance of such an occurrence I have discovered by looking through other historical dates. Perhaps some other deletions have already been fixed, I can think of date like May 12th 2008 or December 26th 2004.
The graphs are here: Spectrum Monitor Waterfall Chart