moving cell values appearing multiple times into a table listing them only once

Hello,

I have a table listing certain values (Column C) and their respective probabilities, based on normal distribution (Column D). As these probabilities are dependant only on values from Column C, I'd like to list all the values from that column into another fragment of the sheet, say F6 and below, but each value should appear there only once, no matter how often it occurs in its original Column C (I listed them manually in Column F in the enclosed example). Moreover, if a new value appears in Column C, it should be also included in the new place and sorted in increasing order.
Many thanks for your help.