# Retrieve population statistics of segment

Retrieve the population history of the segment. The history is returned per day and those days are calculated in the timezone of the audience. Note that funnel_stage kind doesn't have statistics via this endpoint.

Endpoint: GET /audiences/{audienceId}/segments/{segmentId}/statistics
Version: 1.0.0
Security: TdApikeyAuth

## Security:

  - `TdApikeyAuth` (unknown)
    apiKey in header Authorization

## Path parameters:

  - `audienceId` (integer, required)
    Audience ID of the segment

  - `segmentId` (integer, required)
    ID of Segment to return

## Query parameters:

  - `from` (string)
    from date

  - `to` (string)
    to date (inclusive)

## Response 200:

  - `200` (unknown)
    array of tuple of statistics

## Response 400:

  - `400` (unknown)
    Given parameters are not valid

## Response 400 fields (application/json):

  - `code` (string, required)

  - `message` (string, required)

## Response 401:

  - `401` (unknown)
    Unauthorized; You don't provide valid credentials. Maybe you didn't specify valid TD's Master API Key as 'TD1 {Your TD Master API Key}'.

## Response 401 fields (application/json):

  - `code` (string, required)

  - `message` (string, required)

## Response 403:

  - `403` (unknown)
    Requested resource or action is not allowed because you don't have sufficient permissions

## Response 403 fields (application/json):

  - `code` (string, required)

  - `message` (string, required)

## Response 404:

  - `404` (unknown)
    The specified resource was not found

## Response 404 fields (application/json):

  - `code` (string, required)

  - `message` (string, required)

## Response 4XX:

  - `4XX` (unknown)
    There is a high possibility of error of the authentication system. Please check the contents and authority of the key. Please contact the TD support team if you do not resolve it.

## Response 4XX fields (application/json):

  - `code` (string, required)

  - `message` (string, required)

## Response 5XX:

  - `5XX` (unknown)
    System error. Because there is a possibility of a temporary error due to network trouble and so on, we recommend several times retry on request side. Please contact the TD support team if you do not resolve it.

## Response 5XX fields (application/json):

  - `status` (integer, required)
    Error status

  - `error` (string, required)
    Error message

  - `details` (string)
    Detailed error message