Normal sudoku rules apply.
Digits on a thermometer must increase from the bulb end.
Thermometers outside of the grid apply to sandwich clues.
Sandwich clues outside the grid indicate the sum of the digits between the 1 and the 9 in that row / column.
Solution code: Column 9 top to bottom
on 13. October 2021, 17:08 by kolot
Another elegant puzzle with some clever deductions! I think this was slightly harder than the skyscraper puzzle.