pos	ref	alt	in_target	n_oysters_with_alt	alt_freq_Pum	alt_freq_Qui	alt_freq_Rio	pop_differentiated	cpg_destroying	Pum1	Qui1	Qui2	Qui3	Qui4	Rio1	Rio2	Rio3	Rio4
20391107	A	G	False	1	0.25	0.0	0.0	False	False	0.25/4	0.00/4	0.00/6	0.00/7	0.00/3	0.00/5	0.00/6	0.00/4	0.00/4
20391108	T	G	False	1	0.25	0.0	0.0	False	False	0.25/4	0.00/4	0.00/6	0.00/7	0.00/3	0.00/4	0.00/6	0.00/4	0.00/5
20391109	A	G	False	1	0.25	0.0	0.0	False	False	0.25/4	0.00/4	0.00/6	0.00/6	0.00/3	0.00/4	0.00/6	0.00/5	0.00/5
20391110	T	G	False	1	0.25	0.0	0.0	False	False	0.25/4	0.00/4	0.00/6	0.00/6	0.00/3	0.00/4	0.00/6	0.00/5	0.00/5
20391111	T	A	False	1	0.25	0.0	0.0	False	False	0.25/4	0.00/4	0.00/6	0.00/6	0.00/3	0.00/4	0.00/6	0.00/5	0.00/5
20391113	T	A	False	1	0.25	0.0	0.0	False	False	0.25/4	0.00/4	0.00/6	0.00/6	0.00/3	0.00/4	0.00/6	0.00/5	0.00/4