---
title: Reference for columns in CSV export files for campaigns and experiments
slug: web-experimentation/docs/D9uo-reference-for-columns-in-csv-export-files-for-campaigns-and-experiments
docTags: 
createdAt: 2026-07-20T15:45:32.739Z
---

- Optimizely Web Experimentation
- Optimizely Personalization

You can export your campaign and experiment results as a CSV file using the [Optimizely REST API](docId\:dazMPnAs_wgQTLPt7nMCj) and through the web app for [Optimizely Web Experimentation](docId\:mrUblIuNVOZc1dvjWdsbw) and Optimizely Personalization.

The following columns display in CSV export files in the order listed.

### Columns in CSV export files for Optimizely Personalization campaigns

| Column                            | Description | Type                                                                                    |
| --------------------------------- | ----------- | --------------------------------------------------------------------------------------- |
| Start Time (UTC)                  | datetime    | Start time used to calculate the results in UTC time.                                   |
| End Time (UTC)                    | datetime    | End time used to calculate the results in UTC time.                                     |
| Is Baseline Experience            | boolean     | Indicates if the results are for the baseline experience.                               |
| Metric Event Name                 | string      | The metric's name.                                                                      |
| Metric Event ID                   | int         | The metric's event ID.                                                                  |
| Metric Numerator Type             | string      | The numerator of the metric, for example, unique conversions.                           |
| Metric Denominator Type           | string      | The denominator of the metric. Possible values include visitor, session, or conversion. |
| Metric Winning Direction          | string      | The winning direction of the metric. Possible values include increasing or decreasing.  |
| Numerator Value                   | int         | The value of the numerator.                                                             |
| Denominator Value                 | int         | The value of the denominator.                                                           |
| Metric Value                      | float       | The value of the metric after dividing the numerator value over the denominator value.  |
| Improvement Status from Baseline  | string      | Indicates if the improvement is better, worse, or n/a compared to baseline experience.  |
| Improvement Value from Baseline   | float       | The improvement in the metric's value compared to the baseline experience.              |
| Statistical Significance          | float       | The improvement's [statistical significance](docId:31B6_zNXeyFaRErJoKTgK).              |
| Is Improvement Significant        | boolean     | Indicates if the improvement has reached statistical significance.                      |
| Confidence Interval - Low         | float       | The lower bound of the improvement's confidence interval.                               |
| Confidence Interval - High        | float       | The upper bound of the improvement's confidence interval.                               |
| Samples Remaining to Significance | integer     | The estimated number of samples remaining to reach statistical significance.            |

### Columns in CSV export files for experiments

| Column                            | Type     | Description                                                                            |
| --------------------------------- | -------- | -------------------------------------------------------------------------------------- |
| Start Time (UTC)                  | datetime | Start time used to calculate the results in UTC time.                                  |
| End Time (UTC)                    | datetime | End time used to calculate the results in UTC time.                                    |
| Variation Name                    | string   | The variation's name.                                                                  |
| Variation ID                      | int      | The variation's ID.                                                                    |
| Is Baseline Variation             | boolean  | Indicates if the results are for the baseline variation.                               |
| Metric Event Name                 | string   | The metric's name.                                                                     |
| Metric Event ID                   | int      | The metric's event ID.                                                                 |
| Metric Numerator Type             | string   | The numerator of the metric, for example unique conversions.                           |
| Metric Denominator Type           | string   | The denominator of the metric. Possible values include visitor, session or conversion. |
| Metric Winning Direction          | string   | The winning direction of the metric. Possible values include increasing or decreasing. |
| Numerator Value                   | int      | The value of the numerator.                                                            |
| Denominator Value                 | int      | The value of the denominator.                                                          |
| Metric Value                      | float    | The value of the metric after dividing the numerator value over the denominator value. |
| Improvement Status from Baseline  | string   | Indicates if the improvement is better, worse or n/a compared to baseline experience.  |
| Improvement Value from Baseline   | float    | The improvement in the metric’s value compared to the baseline experience.             |
| Statistical Significance          | float    | The improvement's [statistical significance](docId:31B6_zNXeyFaRErJoKTgK).             |
| Is Improvement Significant        | boolean  | Indicates if the improvement has reached statistical significance.                     |
| Confidence Interval - Low         | float    | The lower bound of the improvement's confidence interval.                              |
| Confidence Interval - High        | float    | The upper bound of the improvement's confidence interval.                              |
| Samples Remaining to Significance | integer  | The estimated number of samples remaining to reach statistical significance.           |