GOES-10 X-ray Data Returns
GOES-11 Xray Data LOST

February 12, 2008 -- GOES-10 data has resumed and GOES-10 has been designed the SWPC primary GOES Satellite for X-ray data.
GOES-11 Xray Data has become unavailable and is not expected to return.
GOES-11 Data Lists ended on Feb 10, 2008.
GOES-11 Data Lists have been discontinued.

GOES-12 X-ray Lists End
November 27, 2007 -- the GOES-12 X-ray list has been discontinued because the X-ray sensor is not operating.

GOES Primary and Secondary Satellite Change
GOES 11 Primary, GOES 10 Secondary

Due to an anomaly on the GOES 12 X-ray Sensor (XRS) no GOES 12 X-ray data
has been available at SEC since April 12, 2250 UTC. SEC has changed its
Primary and Secondary X-ray satellite designations to GOES 11 Primary and
GOES 10 Secondary.

There may be minor differences between GOES XRS sensors but the differences
should not affect products.

For now GOES X-ray data files will be created for all three GOES satellites,
GOES 11, GOES 10, and GOES 12 in case GOES 12 data is available again.