Table 3: Comparison of the observed mass ratios in the core of M 87 for five elements to iron with the predicted mass ratios, assuming that all the elements were produced only by supernovae with 86% of all iron produced by SN Ia. The observed to predicted ratio for oxygen is here by definition one.

Mass ratios	Obs.	Pred.	Obs./Pred.
M(C)/M(Fe)	1.32	0.13	10
M(N)/M(Fe)	0.94	0.003	313
M(O)/M(Fe)	2.89	2.89	1
M(Ne)/M(Fe)	1.32	0.36	3.7
M(Mg)/M(Fe)	0.37	0.19	1.9