Fig. 5

Boxplot showing mean paleointensity estimate versus experiment type. The blue box shows the boundaries of the first (25%) and third (75%) quartiles. The black dashed lines represent the minima and maxima (excluding outliers). Red crosses represent substantial outliers in the data. The black circle is the expected paleointensity estimate, based on the data presented in Table 3. This plot was generated using MATLAB’s built-in boxplot script. This figure shows that the median paleointensity estimate decreased as the initial temperature increased from 200 °C to 500 °C. Table 4 shows that the mean PI estimate decreased as well