| season,drift_raw,n_sequences,drift_norm,subtype |
| 2009-10,6.1183867,7,0.5,H3N2 |
| 2010-11,5.796708,143,0.0,H3N2 |
| 2011-12,2.031127,73,0.0,H3N2 |
| 2012-13,3.9450793,1091,0.46827274560928345,H3N2 |
| 2013-14,2.0806842,86,0.012124800123274326,H3N2 |
| 2014-15,1.7202479,1432,0.0,H3N2 |
| 2015-16,1.9757423,1238,0.05809149518609047,H3N2 |
| 2016-17,2.1288106,2591,0.09289446473121643,H3N2 |
| 2017-18,2.3091435,2572,0.13389655947685242,H3N2 |
| 2018-19,3.4237251,3863,0.3873177468776703,H3N2 |
| 2019-20,3.6749108,929,0.44442954659461975,H3N2 |
| 2020-21,3.497066,82,0.4039931893348694,H3N2 |
| 2021-22,0.98050725,5132,0.0,H3N2 |
| 2022-23,2.2399173,3829,0.2451225370168686,H3N2 |
| 2023-24,3.4316843,5106,0.4770795404911041,H3N2 |
| 2024-25,1.3332002,7078,0.06864562630653381,H3N2 |
| 2025-26,3.337307,2621,0.45871058106422424,H3N2 |
|
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