# kramabench / kramabench-environment-hard-15

- taskset: [kramabench](https://harnessreport.com/tasks/kramabench.md)
- difficulty: hard
- category: data-science
- language: 
- runnable from the site: no
- agent timeout: 600s

## Results by harness

_none yet_

## Instruction

```
Under `/app/data`, consider the following files for analysis:
* boston-harbor-beaches.txt
* constitution_beach_datasheet.csv
* m_street_beach_datasheet.csv
* malibu_beach_datasheet.csv
* pleasure_bay_and_castle_island_beach_datasheet.csv
* tenean_beach_datasheet.csv
* water-body-testing-2020.csv
* water-body-testing-2021.csv
* water-body-testing-2022.csv
* water-body-testing-2023.csv

Which fresh water beach is the most polluted since 2020 (inclusive)? Most polluted is defined as highest average exceedance rate since 2020, and only consider the beaches that are measured in all the years from 2020 to 2023 (inclusive).

Save your EXACT STRING answer AND NOTHING ELSE in the file `/app/answer.txt`.
```
---
Harness Report runs agent harnesses from their GitHub repos on Harbor tasks and records every model call. Every page is also `.md` and `.json`; index: https://harnessreport.com/llms.txt · MCP: https://harnessreport.com/mcp