I reverted the change to the spreadsheet.

As for the santa hats, I noticed something unusual. Sometimes most notably on level 15, a tiny brown square block will bounce from behind the hat and explode causing unorthodox reactions. I first noticed this when I saw 0 points pop up. Snow is worth 100, blocks are up to 500 for damage and another 500 for destroying, presents are worth 3000 and pigs are worth 5000. So seeing a blatant zero made me curious. So I paid more attention to this spot while shooting, and sure enough, one time I saw this mysterious block bounce high enough to be seen in clear view, then in landed on the ground, awarded zero points, and spontaneously combusted. That's all I know about it for now.