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. 2022 Mar 11;9:83. doi: 10.1038/s41597-022-01196-7

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Fig. 7 — Changes in the seasonal (a, MAM; b, JJA; c, SON; d, DJF) CO₂ concentrations (ppm) between the reconstructed and the AIRS product averaged during 2003–2016 (excluding 2014). The time period selected is decided by data available. Hatched areas are regions where changes are statistically significant at the 5% level using the Student’s t test.