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After the script getdata.pl is run from a trscrontab on pinger@pinger.slac.stanford.edu to gather data from the monitoring hosts, the data is inspected by checkdata_gif.pl for non responding monitoring hosts, unusual responses from monitoring hosts, invalid data such as missing tokens, inability to send 10 packets etc. In addition a table is constructed showing the state (no response from the monitor, no data from monitor, partial data from the monitor, success) of gathering the data for each monitor node. Besides showing the gathering status going back many months, the table also provides easy links to dynamically test the monitoring host for its ping reachability and the response of its response to the web gather request. Emails are sent daily to the central administrators indicating which monitoring hosts were not successful. The typical follow up after a few days is to email the contact(s) at the monitoring node to request help in fixing the problem. At any given time we are uanble to gather data from about 10% of the monitoring nodes.