Aviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2004-09-30T00:00:000.4500Aviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2005-09-30T00:00:000.4600Aviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2006-09-30T00:00:000.4300Aviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2007-09-30T00:00:000.61000.62000.983871MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2008-09-30T00:00:000.62000.63000.984127MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2009-09-30T00:00:000.63000.64000.984375MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2010-09-30T00:00:000.65000.65001MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2011-09-30T00:00:000.63000.65000.969231MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2012-09-30T00:00:000.61000.65000.938462MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2013-09-30T00:00:000.62000.65000.953846MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2014-09-30T00:00:000.62000.65000.953846MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2015-09-30T00:00:000.65000.65001MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2016-09-30T00:00:000.63000.65000.969231MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2017-09-30T00:00:000.63000.65000.969231MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2018-09-30T00:00:000.63000.65000.969231MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2019-09-30T00:00:000.64000.65000.984615MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2020-09-30T00:00:000.65000.65001MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2021-09-30T00:00:000.64000.65000.984615MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2022-09-30T00:00:000.62000.65000.953846MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2023-09-30T00:00:000.65000.65001MetAviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2024-09-30T00:00:000.6500Aviation ceiling/visibility forecast accuracy Instrument Flight Rules (%)2025-09-30T00:00:000.6500