Can Isobutane Backpacker Stove Simmer?

Can Isobutane Backpacker Stove Simmer? For butane canisters, this can occur around 31°F. For isobutane canisters, this happens around 11°F; though cooking efficiency can be noticeably affected before these temps. How long does 110g isobutane last? So a 110gm can will run around 70min. Or, 12-14 five minute burns per can. This does not include