- 1998 to mid-2005:

Gain (top panel) and read-out-noise (bottom panel) evolution for the SofI detector.
The solid horizontal line at 2 ADU is drown to guide the eye demonstrating a decrease of the RoN.
The images are clickable, linked to eps files.

- 1998 to Jul-Aug 2010:

Same as above, except the solid lines are fits for the data after mid-2006 (marked with a vertical dashed line), and the dotted lines show the +/-1-sigma deviations (only some are shown on the bottom panel for clarity). There is a tendency toward increasing the readout noise.

- 1998 to mid-May 2011:

Same as above, except the solid lines are fits for the data after mid-2006 (marked with a vertical dashed line), and the dotted lines show the +/-1-sigma deviations (only some are shown on the bottom panel for clarity). The gain is stable but the tendency for increasing readout noise that was seen a year ago, is confirmed.

- 1998 to early-May 2012:

Same as above, except the solid lines are fits for the data after mid-2006 (marked with a vertical dashed line), and the dotted lines show the +/-1-sigma deviations (only some are shown on the bottom panel for clarity). The gain is stable but the tendency for increasing readout noise that was seen a year ago, is confirmed.

- 1998 to early-Sept 2012:

Same as above, except the solid lines are fits for the data after mid-2006 (marked with a vertical dashed line), and the dotted lines show the +/-1-sigma deviations (only some are shown on the bottom panel for clarity). The gain is stable. The tendency for increasing readout noise that was seen a year ago may be flattening.

Nota Bene: The files bellow contain occasional spurious measurement. Ignore the values that differ too much from the average ones.
The numerical values of the gain can be found here (last column). The table columns are described in full here.
The numerical values of the read-out noise can be found: here (last four columns). The table columns are described in full here.