Issue with Actions.getPageUrls

Hi guys i have issue with PIWIK.
When i try get data about page views a got next one:

[{"label":"\/public","nb_visits":921,"nb_hits":1113,"sum_time_spent":43663,"nb_hits_with_time_generation":"1102","min_time_generation":"0.002","max_time_generation":"15.095","entry_nb_visits":"805","entry_nb_actions":"1254","entry_sum_visit_length":"109655","entry_bounce_count":"603","exit_nb_visits":"767","sum_daily_nb_uniq_visitors":886,"sum_daily_entry_nb_uniq_visitors":"779","sum_daily_exit_nb_uniq_visitors":"747","avg_time_on_page":39,"bounce_rate":"75%","exit_rate":"83%","avg_time_generation":0.724,"url":"http:\/\/www.example.com\/public","segment":"pageUrl==http%3A%2F%2Fwww.example.com%2Fpublic"},{"label":"public","nb_visits":660,"nb_hits":769,"sum_time_spent":18775,"nb_hits_with_time_generation":751,"min_time_generation":"0.002","max_time_generation":"46.574","entry_nb_visits":614,"entry_nb_actions":796,"entry_sum_visit_length":36977,"entry_bounce_count":518,"exit_nb_visits":593,"avg_time_on_page":24,"bounce_rate":"84%","exit_rate":"90%","avg_time_generation":0.833,"idsubdatatable":9}]

How i can group this data by label or url? I need get all nb_visits. Or how i can get all urls, that was included to “public”?