diff --git a/docs/source/sycamore.md b/docs/source/sycamore.md
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--- a/docs/source/sycamore.md
+++ b/docs/source/sycamore.md
@@ -201,3 +201,91 @@ If surveys are sent on a weekly schedule, Sycamore assumes that there is a surve
**What does `surv_inst_flg` mean in the outputs?**
`surv_inst_flg` is a unique identifying number to distinguish different times when the same individual took the same survey. This column is useful for joining outputs together.
+
+
+## List of summary statistics
+
+The following variables are created in the “submits_summary.csv” file. This file will only be generated if the config file and intervention timings file are provided. The `submits_summary_daily.csv` and `submits_summary_hourly.csv` files contain the same columns, but with additional granularity at the day or hourly levels rather than at the user level.
+
+
+| Variable | Type | Description of Variable |
+|--------------------------------------- |-------------- |------------------------------------------------------------------------------------------------------------- |
+| survey id | str | ID of the survey for which this row applies to. Note: If `submits_by_survey_id` is False, surveys will not be aggregated at the survey level (they will only be aggregated by user) so this column will not appear. |
+| year | int | Year of the time period at which submits/deliveries are being aggregated. This is only included in `submits_summary_daily.csv` and `submits_summary_hourly.csv` |
+| month | int | Month of the time period at which submits/deliveries are being aggregated. This is only included in `submits_summary_daily.csv` and `submits_summary_hourly.csv` |
+| day | int | Day over which submits/deliveries are being aggregated. This is only included in `submits_summary_daily.csv` and `submits_summary_hourly.csv` |
+| hour | int | Hour over which submits/deliveries are being aggregated. This is only included in `submits_summary_hourly.csv` |
+| num_surveys | int | Number of surveys scheduled for delivery to the individual during the period |
+| num_submitted_surveys | int | Number of surveys submitted during the period (i.e. the user hit submit on all surveys)
+| num_opened_surveys | int | Number of surveys opened by the individual during the time period (i.e. the user answered at least one question) |
+| avg_time_to_submit | float | Average time between survey delivery and survey submission, in seconds, for complete surveys |
+| avg_time_to_open | float | Average time between survey delivery and survey opening, in seconds. This is averaged over survey responses where a survey_timings file was available because we do not have information about survey opening in responses where a survey_timings file is missing. |
+| avg_duration | float | Average time between survey opening and survey submission, in seconds.This is averaged over survey responses where a survey_timings file was available because we do not have information about survey opening in responses where a survey_timings file is missing. |
+
+
+The following variables are created in the “submits_and_deliveries.csv” file. This file will only be generated if the config file and intervention timings file are provided.
+
+| Variable | Type | Description of Variable |
+|--------------------------------------- |-------------- |------------------------------------------------------------------------------------------------------------- |
+| survey id | str | ID of the survey |
+| delivery_time | str | A scheduled delivery time. If surveys are weekly, delivery times will be generated for each week between start_date and end_date |
+| submit_flg | str | Either the time when the user hit submit or the time when the individual stopped interacting with the survey for that session |
+| time_to_submit | float | Time between survey delivery and survey submission, in seconds. If a survey was incomplete, this will be blank. |
+| time_to_open | float | Time between survey delivery time and the first recorded survey answer, in seconds (for responses where a survey_timings file was available; if only a survey_answers file was available, this will be 0) |
+| survey_duration | float | Time between the first recorded survey answer and the survey submission, in seconds (for responses where a survey_timings file was available; if only a survey_answers file was available, this will be NA)|
+
+
+The following variables are created in the “answers_data.csv” file. This file will be generated if a survey config file is available.
+
+| Variable | Type | Description of Variable |
+|--------------------------------------- |-------------- |------------------------------------------------------------------------------------------------------------- |
+| survey id | str | ID of the survey |
+| beiwe_id | str | The participant’s Beiwe ID |
+| question id | str | The ID of the question for this line |
+| question text | str | The question text corresponding to the answer |
+| question type | str | The type of question (radio button, free response, etc.) corresponding to the answer |
+| question answer options | str | The answer options presented to the user (applicable for check box or radio button surveys) |
+| timestamp | str | The Unix timestamp corresponding to the latest time the user was on the question |
+| Local time | str | The local time corresponding to the latest time the user was on the question |
+| last_answer | str | The last answer the user had selected before moving on to the next question or submitting |
+| all_answers | str | A list of all answers the user selected |
+| num_answers | int | The number of different answers selected by the user (the length of the list in all_answers) |
+| first_time | str | The local time corresponding to the earliest time the user was on the question |
+| last_time | str | The local time corresponding to the latest time the user was on the question |
+| time_to_answer | float | The time that the user spent on the question |
+
+
+The following variables are created in the “answers_summary.csv” file. This file will only be generated if the config file and intervention timings file are provided.
+
+| Variable | Type | Description of Variable |
+|--------------------------------------- |-------------- |------------------------------------------------------------------------------------------------------------- |
+| survey id | str | ID of the survey |
+| beiwe_id | str | The participant’s Beiwe ID |
+| question id | str | The ID of the question for this line |
+| num_answers | int | The number of times in the given data the answer is answered |
+| average_time_to_answer | float | The average number of seconds the user takes to answer the question |
+| average_number_of_answers | float | Average number of answers selected for a question. This indicated if a user changed an answer before submitting it. |
+| most_common_answer | str | A user’s most common answer to a question |
+
+
+The following variables are created in the “submits_only.csv” file. This file will always be generated.
+
+| Variable | Type | Description of Variable |
+|--------------------------------------- |-------------- |------------------------------------------------------------------------------------------------------------- |
+| survey id | str | ID of the survey |
+| beiwe_id | str | The participant’s Beiwe ID |
+| surv_inst_flg | int | A “submission flag” which distinguishes submissions that are done by the same individual on the same survey |
+| max_time | str | Either the time when the user hit submit or the time when the individual stopped interacting with the survey for that session |
+| min_time | str | The earliest time the individual was interacting with the survey that session |
+| time_to_complete | float | Time between min_time and max_time, in seconds (for responses where a survey_timings file was available) |
+
+
+The following variables are created in a csv file for each survey.
+
+| Variable | Type | Description of Variable |
+|--------------------------------------- |-------------- |------------------------------------------------------------------------------------------------------------- |
+| start_time | str | Time this survey submission was started |
+| end_time | str | Time this survey submission was ended |
+| survey_duration | float | Difference between start and end time, in seconds (for surveys where a survey_timings file was available) |
+| question_1, question_2, … | str | Responses to each question in the survey |
+