Select the "timeseries" tab in SeismiQuery. You need only set a time period and wildcard the network (using the % sign as the wildcard character) and the rest of the parameters can be left blank. When you run the query, you view the results as a graph or table of all stations/channels for which data were archived during the specified time period. (It uses the GOAT tool to display information.) If you just want to see timeseries information for a specific station or network, use the "station" or "network" tab, respectively. The result from either of those two queries is a yearly calendar with days of data availability highlighted and linked to a more complete timeseries table.