1 Not applicable 00 0 Reserved Operational 2 Before 01 1 iMet-1-BB (United States) Operational 3 Not applicable 02 2 No radiosonde - passive target (e.g. reflector) Operational 4 Not applicable 03 3 No radiosonde - active target (e.g. transponder) Operational 5 Not applicable 04 4 No radiosonde - passive temperature-humidity profiler Operational 6 Not applicable 05 5 No radiosonde - active temperature-humidity profiler Operational 7 Not applicable 06 6 No radiosonde - radio-acoustic sounder Operational 8 Before 07 7 iMet-1-AB (United States) Operational 9 Not applicable 08 8 No radiosonde -... (reserved) Operational 10 Not applicable 09 9 No radiosonde - system unknown or not specified Operational 11 Before 10 10 VIZ type A pressure-commutated (United States) Operational 12 Before 11 11 VIZ type B time-commutated (United States) Operational 13 Before 12 12 RS SDC (Space Data Corporation - United States) Operational 14 Before 13 13 Astor (no longer made - Australia) Operational 15 Before 14 14 VIZ MARK I MICROSONDE (United States) Operational 16 Before 15 15 EEC Company type 23 (United States) Operational 17 Before 16 16 Elin (Austria) Operational 18 Before 17 17 Graw G. (Germany) Operational 19 Before 18 18 Graw DFM-06 (Germany) Operational 20 Before 19 19 Graw M60 (Germany) Operational 21 Before 20 20 Indian Meteorological Service MK3 (India) Operational 22 Before 21 21 VIZ/Jin Yang MARK I MICROSONDE (Republic of Korea) Operational 23 Before 22 22 Meisei RS2-80 (Japan) Operational 24 Before 23 23 Mesural FMO 1950A (France) Operational 25 Before 24 24 Mesural FMO 1945A (France) Operational 26 Before 25 25 Mesural MH73A (France) Operational 27 Before 26 26 Meteolabor Basora (Switzerland) Operational 28 Before 27 27 AVK-MRZ (Russian Federation) Operational 29 Before 28 28 Meteorit MARZ2-1 (Russian Federation) Operational 30 Before 29 29 Meteorit MARZ2-2 (Russian Federation) Operational 31 Before 30 30 Oki RS2-80 (Japan) Operational 32 Before 31 31 VIZ/Valcom type A pressure-commutated (Canada) Operational 33 Before 32 32 Shanghai Radio (China) Operational 34 Before 33 33 UK Met Office MK3 (UK) Operational 35 Before 34 34 Vinohrady (Czechia) Operational 36 Before 35 35 Vaisala RS18 (Finland) Operational 37 Before 36 36 Vaisala RS21 (Finland) Operational 38 Before 37 37 Vaisala RS80 (Finland) Operational 39 Before 38 38 VIZ LOCATE Loran-C (United States) Operational 40 Before 39 39 Sprenger E076 (Germany) Operational 41 Before 40 40 Sprenger E084 (Germany) Operational 42 Before 41 41 Sprenger E085 (Germany) Operational 43 Before 42 42 Sprenger E086 (Germany) Operational 44 Before 43 43 AIR IS - 4A - 1680 (United States) Operational 45 Before 44 44 AIR IS - 4A - 1680 X (United States) Operational 46 Before 45 45 RS MSS (United States) Operational 47 Before 46 46 AIR IS - 4A - 403 (United States) Operational 48 Before 47 47 Meisei RS2-91 (Japan) Operational 49 Before 48 48 VALCOM (Canada) Operational 50 Before 49 49 VIZ MARK II (United States) Operational 51 Before 50 50 Graw DFM-90 (Germany) Operational 52 Before 51 51 VIZ-B2 (United States) Operational 53 Before 52 52 Vaisala RS80-57H Operational 54 Before 53 53 AVK-RF95 (Russian Federation) Operational 55 Before 54 54 Graw DFM-97 (Germany) Operational 56 Before 55 55 Meisei RS-01G (Japan) Operational 57 Before 56 56 M2K2 (France) Operational 58 Before 57 57 Modem M2K2-DC (France) Operational 59 Before 58 58 AVK-BAR (Russian Federation) Operational 60 Before 59 59 Modem M2K2-R 1680 MHz RDF radiosonde with pressure sensor chip (France) Operational 61 Before 60 60 Vaisala RS80/MicroCora (Finland) Operational 62 Before 61 61 Vaisala RS80/Loran/Digicora I, II or Marwin (Finland) Operational 63 Before 62 62 Vaisala RS80/PCCora (Finland) Operational 64 Before 63 63 Vaisala RS80/Star (Finland) Operational 65 Before 64 64 Orbital Sciences Corporation, Space Data Division, transponder radiosonde, type 909-11-XX, where XX corresponds to the model of the instrument (United States) Operational 66 Before 65 65 VIZ transponder radiosonde, model number 1499–520 (United States) Operational 67 Before 66 66 Vaisala RS80 /Autosonde (Finland) Operational 68 Before 67 67 Vaisala RS80/Digicora III (Finland) Operational 69 Before 68 68 AVK-RZM-2 (Russian Federation) Operational 70 Before 69 69 MARL-A or Vektor-M-RZM-2 (Russian Federation) Operational 71 Before 70 70 Vaisala RS92/Star (Finland) Operational 72 Before 71 71 Vaisala RS90/Loran/Digicora I, II or Marwin (Finland) Operational 73 Before 72 72 Vaisala RS90/PC-Cora (Finland) Operational 74 Before 73 73 Vaisala RS90/Autosonde (Finland) Operational 75 Before 74 74 Vaisala RS90/Star (Finland) Operational 76 Before 75 75 AVK-MRZ-ARMA (Russian Federation) Operational 77 Before 76 76 AVK-RF95-ARMA (Russian Federation) Operational 78 Before 77 77 GEOLINK GPSonde GL98 (France) Operational 79 Before 78 78 Vaisala RS90/Digicora III (Finland) Operational 80 Before 79 79 Vaisala RS92/Digicora I,II or Marwin (Finland) Operational 81 Before 80 80 Vaisala RS92/Digicora III (Finland) Operational 82 Before 81 81 Vaisala RS92/Autosonde (Finland) Operational 83 Before 82 82 Sippican MK2 GPS/STAR (United States) with rod thermistor, carbon element and derived pressure Operational 84 Before 83 83 Sippican MK2 GPS/W9000 (United States) with rod thermistor, carbon element and derived pressure Operational 85 Before 84 84 Sippican MARK II with chip thermistor, carbon element and derived pressure from GPS height Operational 86 Before 85 85 Sippican MARK IIA with chip thermistor, carbon element and derived pressure from GPS height Operational 87 Before 86 86 Sippican MARK II with chip thermistor, pressure and carbon element Operational 88 Before 87 87 Sippican MARK IIA with chip thermistor, pressure and carbon element Operational 89 Before 88 88 MARL-A or Vektor-M-MRZ (Russian Federation) Operational 90 Before 89 89 MARL-A or Vektor-M-BAR (Russian Federation) Operational 91 Not applicable 90 90 Radiosonde not specified or unknown Operational 92 Not applicable 91 91 Pressure only radiosonde Operational 93 Not applicable 92 92 Pressure only radiosonde plus transponder Operational 94 Not applicable 93 93 Pressure only radiosonde plus radar reflector Operational 95 Not applicable 94 94 No pressure radiosonde plus transponder Operational 96 Not applicable 95 95 No pressure radiosonde plus radar reflector Operational 97 Not applicable 96 96 Descending radiosonde Operational 98 Before 97 97 BAT-16P (South Africa) Operational 99 Before 98 98 BAT-16G (South Africa) Operational 100 Before 99 99 BAT-4G (South Africa) Operational 101 Not available 100 Reserved for BUFR only Operational 102 01 101 Not vacant Operational 103 Not available 102-106 Reserved for BUFR only Operational 104 07 107 Not vacant Operational 105 Not available 108-109 Reserved for BUFR only Operational 106 01/01/2008 10 110 Sippican LMS5 w/Chip Thermistor, duct mounted capacitance relative humidity sensor and derived pressure from GPS height Operational 107 01/01/2008 11 111 Sippican LMS6 w/Chip Thermistor, external boom mounted capacitance relative humidity sensor, and derived pressure from GPS height Operational 108 06/05/2015 12 112 Jin Yang RSG-20A with derived pressure from GPS height/GL-5000P (Republic of Korea) Operational 109 15/09/2010 13 113 Vaisala RS92/MARWIN MW32 (Finland) Operational 110 03/11/2011 14 114 Vaisala RS92/DigiCORA MW41 (Finland) Operational 111 01/12/2011 15 115 PAZA-12M/Radiotheodolite-UL (Ukraine) Operational 112 01/12/2011 16 116 PAZA-22/AVK-1 (Ukraine) Operational 113 02/05/2012 17 117 Graw DFM-09 (Germany) Operational 114 18 118 Not vacant Operational 115 Needed 19 119 Vacant Operational 116 20 120 Not vacant Operational 117 06/05/2015 21 121 Jin Yang 1524LA LORAN-C/GL5000 (Republic of Korea) Operational 118 02/05/2012 22 122 Meisei RS-11G GPS radiosonde w/thermistor, capacitance relative humidity sensor, and derived pressure from GPS height (Japan) Operational 119 03/11/2011 23 123 Vaisala RS41/DigiCORA MW41 (Finland) Operational 120 03/11/2011 24 124 Vaisala RS41/AUTOSONDE (Finland) Operational 121 03/11/2011 25 125 Vaisala RS41/MARWIN MW32 (Finland) Operational 122 07/05/2014 26 126 Meteolabor SRS-C34/Argus 37 (Switzerland) Operational 123 27 127 Not vacant Operational 124 15/09/2011 28 128 AVK - AK2-02 (Russian Federation) Operational 125 15/09/2011 29 129 MARL-A or Vektor-M - AK2-02 (Russian Federation) Operational 126 01/01/2010 30 130 Meisei RS-06G (Japan) Operational 127 03/11/2011 31 131 Taiyuan GTS1-1/GFE(L) (China ) Operational 128 03/11/2011 32 132 Shanghai GTS1/GFE(L) (China) Operational 129 03/11/2011 33 133 Nanjing GTS1-2/GFE(L) (China) Operational 130 Needed 34 134 Vacant Operational 131 07/05/2014 35 135 Meisei iMS-100 GPS radiosonde w/thermistor sensor, capacitance relative humidity sensor, and derived pressure from GPS height (Japan) Operational 132 Needed 36 136 Vacant Operational 133 37 137 Not vacant Operational 134 Needed 38-40 138-140 Vacant Operational 135 03/11/2011 41 141 Vaisala RS41 with pressure derived from GPS height/DigiCORA MW41 (Finland) Operational 136 03/11/2011 42 142 Vaisala RS41 with pressure derived from GPS height/AUTOSONDE (Finland) Operational 137 07/05/2014 43 143 NanJing Daqiao XGP-3G (China)* Operational 138 07/05/2014 44 144 TianJin HuaYunTianYi GTS(U)1 (China)* Operational 139 07/05/2014 45 145 Beijing Changfeng CF-06 (China)* Operational 140 07/05/2014 46 146 Shanghai Changwang GTS3 (China)* Operational 141 47 147 Not vacant Operational 142 02/05/2012 48 148 PAZA-22M/MARL-A Operational 143 49 149 Not vacant Operational 144 02/11/2016 50 150 Meteolabor SRS-C50/Argus (Switzerland) Operational 145 51 151 Not vacant Operational 146 03/11/2011 52 152 Vaisala RS92-NGP/Intermet IMS-2000 (United States) Operational 147 06/05/2015 53 153 AVK - I-2012 (Russian Federation) Operational 148 54-59 154-159 Not vacant Operational 149 06/05/2015 60 160 MARL-A or Vektor-M - I-2012 (Russian Federation) Operational 150 61 161 Not vacant Operational 151 06/05/2015 62 162 MARL-A or Vektor-M - MRZ-3MK (Russian Federation) Operational 152 Needed 63-66 163-166 Vacant Operational 153 67-72 167-172 Not vacant Operational 154 02/11/2016 73 173 МАRL-A (Russian Federation) - ASPAN-15 (Kazakhstan) Operational 155 74-76 174-176 Not vacant Operational 156 15/03/2010 77 177 Modem GPSonde M10 (France) Operational 157 78-81 178-181 Not vacant Operational 158 07/11/2012 82 182 Lockheed Martin LMS-6 w/chip thermistor; external boom mounted polymer capacitive relative humidity sensor; capacitive pressure sensor and GPS wind Operational 159 07/11/2012 83 183 Vaisala RS92-D/Intermet IMS 1500 w/silicon capacitive pressure sensor, capacitive wire temperature sensor, twin thin-film heated polymer capacitive relative humidity sensor and RDF wind Operational 160 Needed 84 184 Vacant Operational 161 85-89 185-189 Not vacant Operational 162 Not available 190 NCAR research dropsonde NRD94 with GPS and Vaisala RS92-based sensor module (United States) Operational 163 Not available 191 NCAR research dropsonde NRD41 with GPS and Vaisala RS41-based sensor module (United States) Operational 164 Not available 192 Vaisala/NCAR dropsonde RD94 with GPS and Vaisala RS92-based sensor module (Finland/United States) Operational 165 Not available 193 Vaisala/NCAR dropsonde RD41 with GPS and Vaisala RS41-based sensor module (Finland/United States) Operational 166 Not available 194-196 Reserved for BUFR only Operational 167 97-99 197-199 Not vacant Operational 168 Not available 200-254 Reserved for BUFR only Operational 169 255 Missing value Operational