sol 47 8AM - 4PM L2 ( blue ) changes to the "ic...

sol 47 8AM - 4PM L2 ( blue ) changes to the "icy soil" in trench Snow White:

What a dogs breakfast.

I adjusted the contrast / brightness in the 4PM image so that the relative contrast between the dark soil and the bright areas was similar to the 8AM exposure. The overall lighting of course changed drastically -- but if you concentrate on the white stuff I think you can see that it is indeed "dimmer" at 4PM than 8 AM.

The areas that increased in brightness may have done so because of the change in illumination. But having said that it is impossible ( for me anyway ) to rule out a dimming because of lighting changes.

I still prefer the sol 45 RAC comparison between 2PM and 10PM. Both images were taken when the bottom of the trench was in shadow so the extreme lighting factor is eliminated.