Numeric values are assigned to observations that meet certain automated or human identified criterion. Positive flags are considered passing. The meaning of these identifiers are as follows:
| Flag | Description |
|---|---|
| ↓ | General |
| 2 | Measurement data filled from backup data recording source |
| 1 | Data failed automatic QAQC but manually passed |
| 0 | Data passes all QAQC metrics |
| -1 | Data manually removed |
| ↓ | Calibration |
| -2 | System flush |
| -3 | Invalid identifier |
| -4 | Drift between adjacent reference tank measurements exceeds limit |
| -5 | Time elapsed between reference tank measurements exceeds limit |
| -6 | Reference tank measurements out of range |
| ↓ | 2B 205 |
| -10 | O3_ppb measurement out of range (0, 250) |
| -11 | Flow_CCmin flow rate out of range (1800, 3000) |
| -12 | Cavity_T_C cell temperature out of range (0, 50) |
| -13 | Time_UTC recent outage > 1 hour -- warmup period of 5 mins |
| ↓ | GPS |
| 20 | position at vehicle storage |
| -21 | Fix_Quality invalid gga fix |
| -22 | N_Sat number of satellites < 4 |
| -23 | Status invalid rmc status |
| -24 | Time_UTC recent outage > 5 mins -- warmup period of 1 min |
| ↓ | Licor 6262 IRGA |
| -30 | CO2d_ppm measurement out of range (0, 3000) |
| -31 | Flow_mLmin flow rate out of range (395, 405) |
| -32 | Cavity_T_C_IRGA cavity temperature out of range (0, 50) |
| -33 | Cavity_P_kPa_IRGA cavity pressure out of range (50, 115) |
| -34 | Time_UTC recent outage > 1 hour -- warmup period of 5 mins |
| ↓ | Licor 7000 IRGA |
| -40 | CO2d_ppm measurement out of range (0, 3000) |
| -41 | Flow_mLmin flow rate out of range (395, 405) |
| -42 | Cavity_T_C_IRGA cavity temperature out of range (0, 55) |
| -43 | Cavity_P_kPa_IRGA cavity pressure out of range (50, 115) |
| -44 | Time_UTC recent outage > 1 hour -- warmup period of 2 mins |
| ↓ | Los Gatos Research NO2 |
| -50 | NO2_ppb measurement out of range (0, 1000) |
| -51 | Cavity_P_torr cavity pressure out of range (296, 300) |
| -52 | Cavity_T_C cavity temperature out of range (0, 50) |
| -53 | Time_UTC recent out > 1 hour -- warmup period of 5 mins |
| ↓ | Los Gatos Research UGGA |
| -60 | CH4d_ppm measurement out of range (0, 1000) |
| -61 | CO2d_ppm measurement out of range (0, 3000) |
| -62 | H2O_ppm measurement out of range (0, 30000) |
| -63 | Cavity_P_torr cavity pressure out of range (135, 145) |
| -64 | Cavity_T_C cavity temperature out of range (5, 45) |
| -65 | Time_UTC recent outage > 1 hour -- warmup period of 5 mins |
| ↓ | Magee AE33 |
| -70 | BC6_ngm3 measurement out of range (0, 100000) |
| -71 | Flow_Lmin flow rate out of range (4.9, 5.1) |
| -72 | Time_UTC recent outage > 1 hour -- warmup period of 5 mins |
| ↓ | MetOne ES642 |
| -80 | PM2.5_ugm3 measurement out of range (0, 100000) |
| -81 | Flow_Lmin flow rate out of range (1.9, 2.1) |
| -82 | Cavity_RH_pct cavity humidty out of range (0, 50) |
| -83 | Status alarm status > 0 |
| -84 | Time_UTC recent outage > 1 hour -- warmup period of 5 mins |
| ↓ | Teledyne T200 |
| -90 | NO_ppb measurement out of range (-3, 20000) |
| -91 | NO2_ppb measurement out of range (-3, 20000) |
| -92 | Flow_CCmin flow rate out of range (350, 600) |
| -93 | O3_Flow_CCmin ozone flow rate out of range (50, 150) |
| -94 | RCel_Pres_inHgA reaction cell pressure out of range (3, 6) |
| -95 | Moly_T_C molybdenum converter temperature out of range (305, 325) |
| -96 | PMT_T_C photomultiplier tube temperature out of range (5, 12) |
| -97 | Box_T_C operating temperature out of range (5, 50) |
| -98 | Time_UTC recent outage > 2 hours -- warmup period of 1 hour |
| ↓ | Teledyne T300 |
| -100 | CO_ppb measurement out of range (0, 100000) |
| -101 | Flow_CCmin flow rate out of range (500, 1000) |
| -102 | Samp_Pres_inHgA sample pressure out of range (15, 35) |
| -103 | Samp_T_C sample temperature out of range (10, 100) |
| -104 | Bench_T_C optical bench temperature out of range (46, 50) |
| -105 | Wheel_T_C filter wheel temperature out of range (66, 70) |
| -106 | Box_T_C operating temperature out of range (5, 50) |
| -107 | Time_UTC recent outage > 2 hours -- warmup period of 1 hour |
| ↓ | Teledyne T400 |
| -110 | O3_ppb measurement out of range (0, 10000) |
| -111 | Flow_CCmin flow rate out of range (500, 1000) |
| -112 | Samp_Pres_inHgA sample pressure out of range (15, 35) |
| -113 | Samp_T_C sample temperature out of range (10, 50) |
| -114 | Box_T_C operating temperature out of range (5, 50) |
| -115 | Time_UTC recent outage > 2 hours -- warmup period of 1 hour |
| ↓ | Teledyne T500u |
| -120 | NO2_ppb measurement out of range (0, 1000) |
| -121 | Samp_Pres_inHgA sample pressure out of range (15, 35) |
| -122 | Phase_T_C gas phase chemiluminescence chamber temperature out of range (15, 35) |
| -123 | Box_T_C operating temperature out of range (5, 50) |
| -124 | ARef_L_mm auto reference loss out of range (400, 1100) |
| -125 | Time_UTC recent outage > 2 hours -- warmup period of 1 hour |
| ↓ | TEOM 1400ab |
| -130 | PM2.5_ugm3 measurement out of range (0, 300000) |
| -131 | Time_UTC recent outage > 1 hour -- warmup period of 5 mins |