The following digrams are done by reading the #presn file. The x-axis has been cut off at 5, 7 and 9 solar masses for the 15, 20 and 25 solar mass stars respectively in order to see more clearly what happens below these mass limits. In addition to the isotope abundances through the volume of the star (labelled), the following are also represented, but not labelled:

• Dark gray region: the "core". The "core' is the ACTUAL iron core (given by: (value of parameter 61 in D#final file) / (1.98892 x 10^33)).
• Light gray regions: convective regions of the star's interior.
• Solid gray line: Nuclear energy generation rate.
• Dashed gray line: Density.

1. File s20_1000_0624:

2. File s20_1000_0912:

3. File s20_1000_1056:

4. File s20_1000_1200:

5. File s20_1000_1344:

6. File s20_1000_1488:

7. File s20_1000_1776:

8. File s20_1000_1920: