Native Flags for CASTNet Ozone - Hourly
Here are your query results:
| ProtocolID | Flag | StatusFlag | Description | FlagType | SourceColumn |
| 2305 | | V0 | Valid data | Data Quality | OZONE_F |
| 2305 | < | V0 | Missing < 25% of hourly sampling period | Data Quality | OZONE_F |
| 2305 | ^ | V0 | Alarm high -- ozone > 120 | Data Quality | OZONE_F |
| 2305 | _ | V0 | Field reading less than zero | Data Quality | OZONE_F |
| 2305 | 0 | V0 | Level 0 validated data | Quality Assurance | QA_CODE |
| 2305 | 1 | V0 | Level 1 validated data | Quality Assurance | QA_CODE |
| 2305 | 1X | I0 | Level 1 data that are suspect based on manual screening. Data should be omitted from any statistical analyses. | Quality Assurance | QA_CODE |
| 2305 | 2 | V0 | Level 2 validated data | Quality Assurance | QA_CODE |
| 2305 | 3 | V0 | Level 3 validated data | Quality Assurance | QA_CODE |
| 2305 | B | I0 | Field instrument channel down for > 75% of hourly sampling period | Data Quality | OZONE_F |
| 2305 | C | I0 | Invalid data due to field calibration of instrument | Data Quality | OZONE_F |
| 2305 | D | I0 | Field instrument channel down for 25% to 75% of hourly sampling period | Data Quality | OZONE_F |
| 2305 | E | V0 | Exceptional event designation requested by state agency
| Data Quality | OZONE_F |
| 2305 | F | I0 | Field instrument power failure | Data Quality | OZONE_F |
| 2305 | GS | I1 | Government shutdown period | Quality Assurance | QA_CODE |
| 2305 | H | I0 | Invalid reading - related to instrument malfunction | Data Quality | OZONE_F |
| 2305 | I | I0 | Invalid reading | Data Quality | OZONE_F |
| 2305 | J | I0 | Invalid reading - related to critical criteria failures | Data Quality | OZONE_F |
| 2305 | K | V0 | Non-nominal flow value identified during automated screening | Data Quality | OZONE_F |
| 2305 | M | I0 | Field data missing | Data Quality | OZONE_F |
| 2305 | P | I0 | Potential problem identified during automated screening requiring further investigation | Data Quality | OZONE_F |
| 2305 | S | V0 | Field instrument out of DQO at time of 2nd calibration | Data Quality | OZONE_F |
| 2305 | X | V4 | Record not obtained via daily polling; placeholder used | Quality Assurance | QA_CODE |
| 2305 | Y | I0 | QC control points (zero/span) | Data Quality | OZONE_F |