Conversation so far:
What is Columbia Hills?
Spirit reached the first of many targets at the base of the Columbia Hills called West Spur.
What happened after this?
Hank's Hollow was studied for 23 sols.
Why is this significant?
it contains hematite.
This kind of rock can be built in connection with water.
What did the Spirit do?
a detailed analysis with the AXPS-and the Mossbauer instrument.
Is there anything else significant about this time?
the rover was shut down completely during the night in order to save energy.
What was the result of this?
The route was selected so that the rover's panels were tilted as much as possible towards the winter sun.

Question: Did this help?
Self-contained rewrite: Did tilting the panels as much as possible towards the winter sun help?