The most recent inverted calibration matrix, taken at 12-Jan-09 19:01:00, plotted as diamonds, is:

1.0	0.0	0.0	0.0
-0.00194557	1.87182	0.216232	-0.0493204
-0.000986876	-0.183290	1.76990	-0.0515176
0.000584173	0.0529687	-0.0994549	-1.82069

The median inverted calibration matrix for the interval is:

1.0	0.0	0.0	0.0
-0.00299185	1.75523	-0.102151	0.0259197
-0.000473552	0.0593593	1.76066	-0.00419431
-0.000237693	-0.000467150	0.0298775	1.77059

The coding of the matrix elements on the plot is:

1.0		0.0		0.0		0.0
IQ		Q		UQ		VQ
IU		QU		U		VU
IV		QV		UV		V