0 | Data points with NULL values in Debbie Miller's RHR data that have a '0' value in the flag_a, flag_b, flag_c, or flag_d field. | Quality Assurance | FLAG_% | M1 |
AA | ORGANIC ARTIFACT CORRECTED | Quality Assurance | FLAG_% | M2 |
AP | Possible Organic Artifact | Quality Assurance | FLAG_% | V5 |
BI | Incorrect installation of sample cartridge during weekly change | Quality Assurance | FLAG_% | M2 |
CG | Clogged Filter, generally associated with fire impact. The final flow rate is less than one-half of the initial flow rate. | Quality Assurance | FLAG_% | V6 |
CL | Clogged Filter, generally associated with fire impact. The final flow rate is less than one-half of the initial flow rate. | Quality Assurance | FLAG_% | M3 |
DA | Did not analyze | Quality Assurance | FLAG_% | M1 |
DBNULL | Unknown | Temporary | FLAG_% | V4 |
DE | Derived value | Quality Assurance | FLAG_% | V2 |
DF | Unknown | Unknown | FLAG_% | V4 |
EE | Unknown flag | Temporary | FLAG_% | V4 |
EP | Equipment Problem | Quality Assurance | FLAG_% | M1 |
LC | Unknown | Unknown | FLAG_% | V0 |
LD | Below detection limit - at one point this flag was mapped to 'NM' | Quality Assurance | FLAG_% | V0 |
LF | The flow is greater than 10% higher or lower than the nominal flow rate. This effects the cut point of the particle but the concentrations are correct. | Quality Assurance | FLAG_% | V6 |
MM | Unknown | Unknown | FLAG_% | V4 |
NA | Not Applicable. This is used for missing modules with non-protocol samplers with less than four modules. | Quality Assurance | FLAG_% | M1 |
NM | NORMAL | Quality Assurance | FLAG_% | V0 |
NR | Samples that have OP=0 that may actually have a negative OP. | Quality Assurance | FLAG_% | V0 |
NS | Operator did not install the samples or installed them too late to acquire a valid time. All filters involved. | Quality Assurance | FLAG_% | M1 |
OL | Off Line. In some cases, this is used when the sampler is inoperable due to hurricane or fire. For year 2000, this is used for the period after the Version 1 sampler is removed and before the Version 2 samples begins operation. | Quality Assurance | FLAG_% | M1 |
PC | Possible contamination | Quality Assurance | flag_ | V5 |
PO | Power Outage. All filters involved. | Quality Assurance | FLAG_% | M1 |
QA | QA problem suspected, value held back for further investigation | Quality Assurance | FLAG_% | I1 |
QC | Valid value despite failing to meet some QC or statistical criteria. | Quality Assurance | FLAG_% | V4 |
QD | Questionable data | Quality Assurance | FLAG_% | V4 |
RF | The flow is greater than 20% higher or lower than the nominal flow rate. This affects the cut point of the particle but the concentrations are correct. | Quality Assurance | FLAG_% | V6 |
SA | Used to indicate some sort of 'Sampling Anomaly', though the exact definition has yet to be satisfactorily defined. | Quality Assurance | FLAG_% | V6 |
SD | Short Duration Sample; The sample is too short for use in calculating RHR metrics, but it is still a meaningful result that is useful in other contexts. | Quality Assurance | FLAG_% | V6 |
SE | Unknown | Unknown | FLAG_% | V0 |
SO | Sent Out | Temporary | FLAG_% | V4 |
SP | An artifact filter was swapped with a sample filter. | Quality Assurance | FLAG_% | V0 |
SU | A data value from another monitoring site or a modeled/estimated data value has been substituted for the original missing/invalid value. | Quality Assurance | FLAG_% | VS |
SW | Suspected filter swap. | Quality Assurance | FLAG_% | V0 |
TO | Timing Outside normal bounds | Quality Assurance | Flag_% | V6 |
TU | Non-standard sampling conditions | Quality Assurance | FLAG_% | V6 |
UN | The concentrations failed the data validation for unknown reasons. | Quality Assurance | FLAG_% | M2 |
XX | The filter is damaged. | Quality Assurance | FLAG_% | M2 |