season,drift_raw,n_sequences,drift_norm,subtype
2009-10,0.84775805,7,0.5,H3N2
2010-11,0.6334458,143,0.0,H3N2
2011-12,0.35185507,73,0.0,H3N2
2012-13,0.8725457,1091,1.0,H3N2
2013-14,0.49331892,86,0.27168500423431396,H3N2
2014-15,0.42631736,1432,0.14300677180290222,H3N2
2015-16,0.4348226,1238,0.15934127569198608,H3N2
2016-17,0.53644246,2591,0.35450488328933716,H3N2
2017-18,0.7152295,2414,0.6978700757026672,H3N2
2018-19,1.0809416,3758,1.0,H3N2
2019-20,1.0485994,929,0.9556401371955872,H3N2
2020-21,1.0846297,82,1.0,H3N2
2021-22,0.13374482,5129,0.0,H3N2
2022-23,0.72480357,3827,0.6215881705284119,H3N2
2023-24,0.97663915,5038,0.8864315748214722,H3N2
2024-25,0.3138725,6957,0.18943163752555847,H3N2
2025-26,1.1456025,520,1.0,H3N2