Facebook Graph API Insights values discrepancy -


i using graph api data facebook found strange depending on period chosen values don't make sense me.

the request

 /insights/page_impressions_unique?since=1432191600&until=1433401200

returns following values:

  "name": "page_impressions_unique",        "period": "day",        "values": [         {           "value": 2,            "end_time": "2015-05-22t07:00:00+0000"         },          {           "value": 8,            "end_time": "2015-05-23t07:00:00+0000"         },          {           "value": 4,            "end_time": "2015-05-24t07:00:00+0000"         },          {           "value": 2,            "end_time": "2015-05-25t07:00:00+0000"         },          {           "value": 0,            "end_time": "2015-05-26t07:00:00+0000"         },          {           "value": 2,            "end_time": "2015-05-27t07:00:00+0000"         },          {           "value": 10,            "end_time": "2015-05-28t07:00:00+0000"         },          {           "value": 14,            "end_time": "2015-05-29t07:00:00+0000"         },          {           "value": 4,            "end_time": "2015-05-30t07:00:00+0000"         },          {           "value": 1,            "end_time": "2015-05-31t07:00:00+0000"         },          {           "value": 1,            "end_time": "2015-06-01t07:00:00+0000"         },          {           "value": 3,            "end_time": "2015-06-02t07:00:00+0000"         },          {           "value": 108,            "end_time": "2015-06-03t07:00:00+0000"         },          {           "value": 17,            "end_time": "2015-06-04t07:00:00+0000"         }       ],        "title": "daily total reach",        "description": "daily: number of people have seen content associated page. (unique users)"     },      {       "name": "page_impressions_unique",        "period": "week",        "values": [         {           "value": 110,            "end_time": "2015-05-22t07:00:00+0000"         },          {           "value": 114,            "end_time": "2015-05-23t07:00:00+0000"         },          {           "value": 116,            "end_time": "2015-05-24t07:00:00+0000"         },          {           "value": 116,            "end_time": "2015-05-25t07:00:00+0000"         },          {           "value": 69,            "end_time": "2015-05-26t07:00:00+0000"         },          {           "value": 16,            "end_time": "2015-05-27t07:00:00+0000"         },          {           "value": 20,            "end_time": "2015-05-28t07:00:00+0000"         },          {           "value": 29,            "end_time": "2015-05-29t07:00:00+0000"         },          {           "value": 27,            "end_time": "2015-05-30t07:00:00+0000"         },          {           "value": 24,            "end_time": "2015-05-31t07:00:00+0000"         },          {           "value": 23,            "end_time": "2015-06-01t07:00:00+0000"         },          {           "value": 23,            "end_time": "2015-06-02t07:00:00+0000"         },          {           "value": 125,            "end_time": "2015-06-03t07:00:00+0000"         },          {           "value": 131,            "end_time": "2015-06-04t07:00:00+0000"         }       ],

i know "period": "week" values sum of 7 days prior end_time, can't values adding days in "period": "day" .

tl;dr: know how week values adding day values?

this because when ask week gives weekly data means, "end_time": "2015-05-22t07:00:00+0000" data last 7 days i.e. consist data of "2015-05-16t07:00:00+0000" "2015-05-22t07:00:00+0000" , "end_time": "2015-05-23t07:00:00+0000" data last 7 days i.e. consist data of "2015-05-17t07:00:00+0000" "2015-05-23t07:00:00+0000".

if sum values day period between range can value greater or equal value return weekly data due unique in last 7 day.

you can try 

 /insights/page_impressions_unique?since=1432191600&until=1432364400

then weekly data since "2015-05-21t07:00:00+0000" & until "2015-05-23t07:00:00+0000", date range 2 days data weekly data well.

above information valid facebook team, got answer facebook developers. had conversation facebook team regarding same problem had in our application.


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