Just a last remark before we move onto other subjects: we are already really careful to precisely say there aren't any "colder" temperatures than 0K but never ever say "there aren't any adverse complete temperatures" because that may've been false. Let's have a look at ways to use this calculator! https://offensive-bund.de/maximale-nutzung-ihres-gefrierraums-die-besten-tipps-fur-eine-effiziente-lebensmittellagerung/