How many episodes were seen by 0.67 million US viewers on their original air dates?
{'header': ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Original air date', 'U.S. viewers (million)'], 'page_title': '', 'section_title': '', 'caption': '', 'rows': [['61', '1', '"The Unforgiven"', 'David Duchovny', 'Tom Kapinos', 'January13,2013', '1.07'], ['62', '2', '"Quitters"', 'John Dahl', 'Tom Kapinos', 'January20,2013', '0.74'], ['63', '3', '"Dead Rock Stars"', 'Adam Bernstein', 'Tom Kapinos', 'January27,2013', '0.89'], ['64', '4', '"Hell Bent for Leather"', 'David Von Ancken', 'Tom Kapinos', 'February10,2013', '0.75'], ['65', '5', '"Rock and a Hard Place"', 'David Von Ancken', 'Tom Kapinos', 'February17,2013', '0.67'], ['66', '6', '"In the Clouds"', 'David Von Ancken', 'Tom Kapinos', 'February24,2013', '0.57'], ['67', '7', '"The Dope Show"', 'Michael Weaver', 'Tom Kapinos', 'March3,2013', '0.79'], ['68', '8', '"Everybody\'s a Fucking Critic"', 'Seith Mann', 'Tom Kapinos', 'March10,2013', '0.69'], ['69', '9', '"Mad Dogs & Englishmen"', 'Adam Bernstein', 'Tom Kapinos', 'March17,2013', '0.77'], ['70', '10', '"Blind Faith"', 'Adam Bernstein', 'Tom Kapinos', 'March24,2013', '0.59'], ['71', '11', '"The Abby"', 'Michael Weaver', 'Tom Kapinos', 'March31,2013', '0.58']]}