| Name | Type | Description |
|---|---|---|
| contract | String | The option contract for the intervals |
| change | Float | The ratio of Close minus Open to Open. |
| open | Float | The first traded contract price in this interval. |
| high | Float | The highest traded contract price in this interval. |
| low | Float | The lowest traded contract price in this interval. |
| close | Float | The last traded contract price in this interval. |
| volume | Float | The volume of contract trades in this interval. |
| average | Float | The volume weighted average price of contract trades in this interval. |