label_x	label_y	mass_difference	abundance_x	abundance_y	ion_mode	charge
C	(13C)	1.003355	98.93	1.07	both	1
C	(13C)	0.5016775	98.93	1.07	both	2
S	(34S)	1.995796	94.99	4.25	both	1
K	(41K)	1.998119	93.25	6.73	pos	1
Cl	(37Cl)	1.99705	75.76	24.24	neg	1