How many series had 18.77 million viewers?
{'header': ['Series #', 'Season #', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production Code', 'U.S. viewers (millions)'], 'page_title': '', 'section_title': '', 'caption': '', 'rows': [['48', '1', '"In The Dark"', 'Paul Holohan', 'Hank Steinberg', 'September23,2004', '175301', '21.51'], ['49', '2', '"Thou Shalt Not"', 'Randall Zisk', 'Jennifer Levin', 'October7,2004', '175302', '21.31'], ['50', '3', '"Light Years"', 'Craig Zisk', 'Greg Walker', 'October14,2004', '175303', '19.35'], ['51', '4', '"Upstairs Downstairs"', 'Timothy Busfield', 'Hank Steinberg, Judy Sachs', 'October21,2004', '175304', '18.49'], ['52', '5', '"American Goddess"', 'Tony Goldwyn', 'Maria Maggenti', 'October28,2004', '175305', '22.06'], ['53', '6', '"Nickel and Dimed, Part 1"', 'Martha Mitchell', 'David Amann', 'November4,2004', '175306', '21.77'], ['54', '7', '"Nickel and Dimed, Part 2"', 'John F. Showalter', 'Jan Nash', 'November11,2004', '175307', '20.46'], ['55', '8', '"Doppelgänger II"', 'Timothy Busfield', 'Hank Steinberg', 'November18,2004', '175308', '19.75'], ['56', '9', '"Trials"', 'David Von Ancken', 'David H. Goodman', 'November25,2004', '175309', '19.75'], ['57', '10', '"Malone v. Malone"', 'Hank Steinberg', 'Hank Steinberg', 'December9,2004', '175310', '19.49'], ['58', '11', '"4.0"', 'Ken Collins', 'Jennifer Levin', 'January6,2005', '175311', '23.76'], ['59', '12', '"Penitence"', 'Scott White', 'Allison Abner', 'January13,2005', '175312', '18.77'], ['60', '13', '"Volcano"', 'John F. Showalter', 'Greg Walker', 'February3,2005', '175313', '19.33'], ['61', '14', '"Neither Rain Nor Sleet"', 'Timothy Busfield', 'Jan Nash', 'February10,2005', '175314', '19.63'], ['62', '15', '"Party Girl"', 'Rob Bailey', 'Amanda Segal Marks', 'February17,2005', '175315', '21.01'], ['63', '16', '"Manhunt"', 'Jeannot Szwarc', 'David Amann', 'February24,2005', '175316', '21.37'], ['64', '17', '"Lone Star"', 'Paul Holohan', 'David Mongan', 'March10,2005', '175317', '23.32'], ['65', '18', '"Transitions"', 'Paul Holohan', 'David H. Goodman', 'March31,2005', '175318', '21.27'], ['66', '19', '"Second Sight"', 'Jeff T. Thomas', 'Jan Nash', 'April14,2005', '175319', '19.99'], ['67', '20', '"The Bogie Man"', 'Jeff T. Thomas', 'Jan Nash', 'May4,2005', '175320', '11.93'], ['68', '21', '"Off the Tracks"', 'John F. Showalter', 'Greg Walker', 'May5,2005', '175321', '17.92'], ['69', '22', '"John Michaels"', 'Hank Steinberg', 'Hank Steinberg', 'May12,2005', '175322', '18.92']]}