user: Question:  how many height m ( ft ) with notes being via WCCV; formerly W236AJ
Columns: ['Call sign', 'Frequency MHz', 'City of license', 'ERP W', 'Height m ( ft )', 'FCC info', 'Notes']
Types: ['text', 'text', 'text', 'real', 'text', 'text', 'text']
Sample row: ['W261BG', '100.1', 'Morrow, Georgia', 5.0, 'm (ft)', 'FCC', 'via WCCV, though out of its broadcast range']
SQL:

assistant: SELECT COUNT("Height m ( ft )") FROM "Table" WHERE "Notes" = 'via WCCV; formerly W236AJ';