gistfile1.txt

 {"date"=>"2014-07-29", "response_time"=>"64 days 23:44:04.855846", "id"=>"108692", "customer_id"=>"19078"},
 {"date"=>"2014-07-29", "response_time"=>"01:52:52.975275", "id"=>"108694", "customer_id"=>"19080"},
 {"date"=>"2014-07-29", "response_time"=>"12 days 20:59:04.626793", "id"=>"108702", "customer_id"=>"19010"},
 {"date"=>"2014-07-29", "response_time"=>"55 days 20:49:27.975908", "id"=>"108706", "customer_id"=>"5114"},
 {"date"=>"2014-07-29", "response_time"=>"02:08:34.323635", "id"=>"108712", "customer_id"=>"2400"},
 {"date"=>"2014-07-29", "response_time"=>"1 day 02:39:03.611563", "id"=>"108732", "customer_id"=>"14886"},
 {"date"=>"2014-07-29", "response_time"=>"00:47:16.785811", "id"=>"108740", "customer_id"=>"18607"},
 {"date"=>"2014-07-29", "response_time"=>"00:48:26.918115", "id"=>"108759", "customer_id"=>"16310"},
 {"date"=>"2014-07-29", "response_time"=>"00:34:33.677096", "id"=>"108760", "customer_id"=>"13336"},
 {"date"=>"2014-07-29", "response_time"=>"00:00:52.137527", "id"=>"108796", "customer_id"=>"18607"},
 {"date"=>"2014-07-29", "response_time"=>"74 days 01:00:46.612936", "id"=>"108797", "customer_id"=>"2145"},
 {"date"=>"2014-07-29", "response_time"=>nil, "id"=>"108798", "customer_id"=>"10276"},
 {"date"=>"2014-07-29", "response_time"=>"00:13:51.948293", "id"=>"108801", "customer_id"=>"19100"},