Table 3 : Results of the ANCOVA test for
calibration-pairs for slope and intercept. Red shading indicates
differences in parameters with 95% confidence (p < 0.05),
yellow shading indicates differences in parameters with 90% confidence
(0.05 < p < 0.10), and green shading indicates no
statistically significant difference between parameters. Top: ANCOVA
results for slope. 27 pairs have a p value > 0.1,
demonstrating a convergence of slope when looking at material-specific
groups of data. Bottom: Results of the ANCOVA test for calibration-pairs
for intercept. This analysis is only performed on calibration pairs that
had p-values exceeding 0.1 for the slope analysis. Differences in
intercepts between different groups of data in this study were prevalent
in 4 pairwise comparisons (p < 0.05), thus, material specific
calibrations may be appropriate for climate reconstructions.
*Δ47 values were corrected to a 90°C reference frame
using AFF presented in Petersen et al. (2019). **Δ47values were corrected to I-CDES using Equation A.7. in Bernasconi et al.
(2021).