To delete a set of values in your account make a DELETE request to:
https://industrial.api.ubidots.com/api/v1.6/variables/{VAR_ID}/values/{START}/{END}/Values between the {START} timestamp and the {END} timestamp will be deleted.
Http Request
DELETE /api/v1.6/variables/{VAR_ID}/values/{START}/{END}/?token={TOKEN} HTTP/1.1
Host: industrial.api.ubidots.com
Example request
# Request: Delete all values between timestamps 1447136223927 and 1449419580541:
curl -X DELETE "https://industrial.api.ubidots.com/api/v1.6/variables/561ecb647625425fd0dfec9c/values/1447136223927/1449419580541/?token=MtRbM7ipKUsjRh6RwJE0ofIQo0KqoG"
# Response
{
"count": 7200
}
PROTIP: A useful tool to convert between Human readable dates and POSIX timestamps is: www.epochconverter.com.
NOTE: Remember to replace {VAR_ID} with the ID of the Variable you wish to retrieve and {TOKEN} with a valid token from your account.