update pt_graph.png with latest graph
update pt_graph.png with latest graph

Tisseo/navitia,kinnou02/navitia,CanalTP/navitia,xlqian/navitia,xlqian/navitia,xlqian/navitia,kinnou02/navitia,xlqian/navitia,Tisseo/navitia,CanalTP/navitia,Tisseo/navitia,kinnou02/navitia,kinnou02/navitia,CanalTP/navitia,patochectp/navitia,patochectp/navitia,Tisseo/navitia,patochectp/navitia,Tisseo/navitia,CanalTP/navitia,patochectp/navitia,pbougue/navitia,xlqian/navitia,pbougue/navitia,CanalTP/navitia,pbougue/navitia,pbougue/navitia