| season,drift_raw,n_sequences,drift_norm,subtype |
| 2009-10,1.6366653,646,0.5,H1N1 |
| 2010-11,1.5849869,134,0.0,H1N1 |
| 2011-12,3.607212,42,1.0,H1N1 |
| 2012-13,3.8613274,34,1.0,H1N1 |
| 2013-14,3.6469343,112,0.9058167338371277,H1N1 |
| 2014-15,3.5108004,140,0.8460128903388977,H1N1 |
| 2015-16,3.1964705,1524,0.7079272866249084,H1N1 |
| 2016-17,1.5036116,548,0.0,H1N1 |
| 2017-18,2.772233,1146,0.5380722284317017,H1N1 |
| 2018-19,1.4579738,2432,0.0,H1N1 |
| 2019-20,1.7198768,2032,0.10897394269704819,H1N1 |
| 2020-21,2.9870586,12,0.6362296342849731,H1N1 |
| 2021-22,3.198402,105,0.7241664528846741,H1N1 |
| 2022-23,1.4186765,2158,0.0,H1N1 |
| 2023-24,1.2521486,6766,0.0,H1N1 |
| 2024-25,1.5208739,6155,0.10299228131771088,H1N1 |
| 2025-26,2.1522412,89,0.34497159719467163,H1N1 |
|
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