# S1
## Old code
| date | snapshot |     | last_ev  | last_unev | Snap |
| ---- | -------- | --- | -------- | --------- | ---- |
| 2022 | S2       |     | 2022     |           | S2   |
| 2020 | S2       |     | 2020     | 2022      | S2   |
| 2021 | S2       |     | **2021** | **2020**  | S2   |

## New code
| date | snapshot |     | last_ev  | last_unev | Snap |
| ---- | -------- | --- | -------- | --------- | ---- |
| 2022 | S2       |     | 2022     |           | S2   |
| 2020 | S2       |     | 2020     | 2022      | S2   |
| 2021 | S2       |     | **2020** | **2022**  | S2   |

# S2

## Old code
| date | snapshot |     | last_ev | last_unev | Snap |
| ---- | -------- | --- | ------- | --------- | ---- |
| 2022 | S2       |     | 2022    |           | S2   |
| 2021 | S2       |     | 2021    | 2022      | S2   |
| 2020 | S2       |     | 2020    | **2021**  | S2   |

## New Code
| date | snapshot |     | last_ev | last_unev | Snap |
| ---- | -------- | --- | ------- | --------- | ---- |
| 2022 | S2       |     | 2022    |           | S2   |
| 2021 | S2       |     | 2021    | 2022      | S2   |
| 2020 | S2       |     | 2020    | **2022**  | S2   |


# S3

## Old code

| date | snapshot |     | last_ev | last_unev | Snap |
| ---- | -------- | --- | ------- | --------- | ---- |
| 2022 | S2       |     | 2022    |           | S2   |
| 2021 | S2       |     | 2021    | 2022      | S2   |
| 2020 | S2       |     | 2020    | **2021**  | S2   |
| 2024 | S3       |     | 2024    | 2021      | S3   |
| 2025 | S3       |     | 2024    | 2025      | S3   |
| 2023 | S3       |     | 2023    | **2024**  | S3   |

## New code

| date | snapshot |     | last_ev | last_unev | Snap |
| ---- | -------- | --- | ------- | --------- | ---- |
| 2022 | S2       |     | 2022    |           | S2   |
| 2021 | S2       |     | 2021    | 2022      | S2   |
| 2020 | S2       |     | 2020    | **2022**  | S2   |
| 2024 | S3       |     | 2024    | 2021      | S3   |
| 2025 | S3       |     | 2024    | 2025      | S3   |
| 2023 | S3       |     | 2023    | **2025**  | S3   |