DELETE FROM Station_Data WHERE net = 'US';
DELETE FROM Station_Comment WHERE net = 'US';
DELETE FROM Channel_Data WHERE net = 'US';
DELETE FROM Channel_Comment WHERE net = 'US';
DELETE FROM Polynomial WHERE net = 'US';
DELETE FROM Coefficients WHERE net = 'US';
DELETE FROM DM WHERE key IN (SELECT dm_key FROM Decimation WHERE net = 'US');
DELETE FROM Decimation WHERE net = 'US';
DELETE FROM PZ WHERE key IN (SELECT pz_key FROM Poles_Zeros WHERE net = 'US');
DELETE FROM PZ_Data WHERE key IN (SELECT pz_key FROM Poles_Zeros WHERE net = 'US');
DELETE FROM Poles_Zeros WHERE net = 'US';
DELETE FROM Sensitivity WHERE net = 'US';
COMMIT;
EXIT;
