# Pressure Observations — Exact Row Deduplication + Secondary-Measure Weighted Mean

> Pressure Observations — Exact Row Deduplication + Secondary-Measure Weighted Mean is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-25).

Deduplicates pressure observation records exactly and computes elevation-weighted mean pressure statistics across up to 200 rows in two analytical reports.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-weather-05-051?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-25
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pressure-observations-exact-row-deduplication-secondary-measure-7015fbcc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ozXffUeyb16kbKsB6vhAA

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 pressure-observations-exact-row-deduplication-secondary-measure-7015fbcc -d '<json body>'
```

Example prompt: I have 150 pressure observation records with pressure_hpa and elevation_m fields for multiple station groups — can you deduplicate the rows exactly and compute an elevation-weighted mean of the pressure readings?

## When to prefer this

Choose this endpoint when you have up to 200 pressure observation records (pressure_hpa + elevation_m) that need exact row deduplication combined with a secondary-measure weighted mean in a single low-cost call. It is purpose-built for atmospheric/weather station data quality workflows, not for real-time forecasting, live data lookup, or datasets exceeding 200 rows.

## Known failure modes

- Exceeding 200-row limit results in rejection
- Missing required fields (row_id, station_group, date, pressure_hpa, elevation_m) cause validation errors
- Invalid date format (not YYYY-MM-DD) causes schema rejection
- Null values in both pressure_hpa and elevation_m may produce undefined weighted mean
- Submitting fewer than 1 row fails minItems constraint

## How this service works

Pressure observations — Exact row deduplication + Secondary-measure weighted mean: Exact row deduplication + Secondary-measure weighted mean for supplied pressure observations records (pressure_hpa, elevation_m). 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: (1) a deduplicated set of pressure observation rows with exact duplicates removed, and (2) a secondary-measure weighted mean of the primary field (pressure_hpa or elevation_m) computed across the supplied records, both derived purely from the supplied data with no external lookups.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pressure-observations-exact-row-deduplication-secondary-measure-7015fbcc/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)