Extended Data Fig. 4: Correlation between the isotopic composition of ice (δDice) and δO2/N2 of the trapped air in the Allan Hills blue ice dating back to 1.5 Ma. | Nature Geoscience

Extended Data Fig. 4: Correlation between the isotopic composition of ice (δDice) and δO2/N2 of the trapped air in the Allan Hills blue ice dating back to 1.5 Ma.

From: Early Pleistocene East Antarctic temperature in phase with local insolation

Extended Data Fig. 4

Error bars represent the pooled standard error of the δO2/N2 measurements (± 2.38 ‰). Dashed lines represent 95% confidence interval of the slope [–0.71 ± 0.37 (1σ)] of the linear regression. The correlation is not statistically significant at 95% significance level (N = 25; r2 = 0.15; two-tailed p = 0.06).

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