The BoM said it had taken immed­iate action to replace the Thredbo station after concerns were raised that very low temperatures were not making it onto the official record. Controversy has dogged the bureau's automatic weather station network since Goulburn man Lance Pigeon saw a -10.4C reading on the BoM's website on July 2 automatically adjust to -10C, then disappear. Later independent monitoring of the Thredbo Top station by scientist Jennifer Marohasy showed a recording of -10.6C ­vanish from the record.