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Masked reweighted ℓ1 thermometry with a 7th order background polynomial phase and 25 reweights. For each hot spot diameter, reweighted ℓ1 thermometry was applied using the same hot spot mask as in the masked ℓ2 method. Using a mask improves the accuracy of the reweighted ℓ1 method at the largest hot spot sizes, resulting in lower bias than the masked ℓ2 method across the entire range of sizes.
