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OBSERVATIONAL ORGANISATION RMC CHENNAI |
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| TYPE | ANDHRA PRADESH | KARNATAKA | KERALA | TAMILNADU | TOTAL |
| SURFACE OBSERVATORY (DEPARTMENTAL) | 18 | 9 | 10 | 16 | 53 |
| SURFACE OBSERVATORY (NON-DEPARTMENTAL) | 19 | 18 | 7 | 24 | 68 |
| PILOT BALLOON OBSERVATORY | 4 | 3 | 3 | 3 | 13 |
| RADIOSONDE/RAWIN | 3 | 2 | 3 | 2 | 10 |
| RADIOSONDE ONLY | 1 | 1 | |||
| HYDRO METEOROLOGICAL OBSERVATORY | 10 | 8 | 2 | 2 | 22 |
| RAINGUAGES (REPORTING & NON-DEPARTMENTAL) | 192 | 260 | 61 | 157 | 670 |
| SEISMOLOGICAL OBSERVATORY | 2 | 1 | 2 | 3 | 8 |
| OZONE MONITORING | 2 | 2 | 4 | ||
| RADIATION MONITORING | 3 | 3 | 3 | 3 | 12 |
| EVAPORATION MEASUREMENTS | 7 | 4 | 4 | 11 | 26 |
| DEW MEASUREMENTS | 2 | 2 | 2 | 1 | 7 |
| AVIATION CURRENT WEATHER OBSERVATORY | 4 | 3 | 4 | 6 | 17 |
| AERONAUTICAL FORECASTING OBSERVATORY | 1 | 1 | 1 | 1 | 4 |
| STORM DETECTION RADAR | 1 | 1 | 1 | 3 | |
| CYCLONE DETECTION RADAR | 2 | 1 | 2 | 5 | |
| BAPMON ( BACKGROUND AIR POLLUTION MONITORING) STATIONS | 1 | 1 | 1 | 3 | |
| CYCLONE WARNING DISSEMINATION SYSTEM (CWDS) | 80 | 5 | 5 | 58 | 148 |