# Solar Observations — Numeric Row Ordering + Two-Measure Correlation

> Solar Observations — Numeric Row Ordering + Two-Measure Correlation is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-24).

Analyzes up to 200 solar observation records by ordering rows numerically and computing correlation between irradiance and duration measures.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-weather-06-120?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/solar-observations-numeric-row-ordering-two-measure-correlation-9a922246
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1gF-PS8FhqomlhKkSMAd0

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability solar-observations-numeric-row-ordering-two-measure-correlation-9a922246 -d '<json body>'
```

Example prompt: I have 50 solar observation records with irradiance_wm2 and duration_hours readings from multiple station groups — can you rank them numerically by irradiance_wm2 and also give me the correlation report between irradiance and duration for this dataset?

## When to prefer this

Choose this endpoint when you have solar observation data (irradiance and sunshine duration) and need both a numeric ranking of rows by one measure AND a correlation analysis between the two measures in a single $0.01 call — avoiding the need to run two separate analytical queries. Best for datasets of up to 200 rows where no live data lookup, prediction, or external enrichment is needed.

## Known failure modes

- Exceeding 200 rows causes rejection
- Missing required fields (row_id, date, irradiance_wm2, duration_hours) cause validation errors
- Malformed date strings not matching YYYY-MM-DD pattern are rejected
- Null values in both measure columns may produce incomplete correlation results
- Payment failure or insufficient USDC balance blocks execution

## How this service works

Solar observations — Numeric row ordering + Two-measure correlation: Numeric row ordering + Two-measure correlation for supplied solar observations records (irradiance_wm2, duration_hours). Up to 200 rows; 2 independent reports using shared local analytical engines. No live lookup, prediction, professional assessment or external action. 0.01 USDC includes 2 supplied-data reports for up to 200 rows.

## Output

Returns two analytical reports for the supplied solar observation rows: (1) a numeric row ordering ranked by the selected field (irradiance_wm2 or duration_hours), and (2) a correlation analysis between the irradiance_wm2 and duration_hours measures across all supplied rows.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "row_id",
     "station_group",
     "date",
     "irradiance_wm2",
     "duration_hours"
    ],
    "properties": {
     "date": {
      "type": "string",
      "default": "",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "maxLength": 10
     },
     "row_id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     },
     "station_group": {
      "type": "string",
      "default": "",
      "maxLength": 80
     },
     "duration_hours": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "irradiance_wm2": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "date": "2026-10-01",
     "row_id": "row-1",
     "station_group": "group-a",
     "duration_hours": 1,
     "irradiance_wm2": 10
    },
    {
     "date": "2026-10-02",
     "row_id": "row-2",
     "station_group": "group-b",
     "duration_hours": 2,
     "irradiance_wm2": 20
    },
    {
     "date": "2026-10-03",
     "row_id": "row-3",
     "station_group": "group-a",
     "duration_hours": 3,
     "irradiance_wm2": 15
    },
    {
     "date": "2026-10-04",
     "row_id": "row-4",
     "station_group": "group-b",
     "duration_hours": 4,
     "irradiance_wm2": 30
    }
   ],
   "maxItems": 200,
   "minItems": 1
  },
  "field": {
   "enum": [
    "irradiance_wm2",
    "duration_hours"
   ],
   "type": "string",
   "default": "irradiance_wm2"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/solar-observations-numeric-row-ordering-two-measure-correlation-9a922246/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)