TABLE 1.

The empirical weights $w\left(\left\{e_v,e_u\right\}\right)$ used for low resolution data (yeast and worm). For each v and u, we compute the mass-to-charge ratio difference m_v − m_u and read the correspond entry from the table.

b-ion
$m_v-m_u$	−28	−27	−19	−18	−17	−16
$w^{\prime }(\{v,u\})$	0.1101	0.0225	0.0121	0.3128	0.2364	0.0784
$m_v-m_u$	−15	−12	−1	0	+1	+2
$w^{\prime }(\{v,u\})$	0.0112	0.0107	0.0481	0.6122	0.2514	0.0511
y-ion
$m_v-m_u$	−18	−17	−16	0	+1	+2
$w^{\prime }(\{v,u\})$	0.1364	0.1179	0.0345	1	0.4253	0.0741