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 24 Before 22 22 Meisei RS2-80 (Japan) Operational 25 Before 23 23 Mesural FMO 1950A (France) Operational 26 Before 24 24 Mesural FMO 1945A (France) Operational 27 Before 25 25 Mesural MH73A (France) Operational 28 Before 26 26 Meteolabor Basora (Switzerland) Operational 29 Before 27 27 AVK-MRZ (Russian Federation) Operational 30 Before 28 28 Meteorit MARZ2-1 (Russian Federation) Operational 31 Before 29 29 Meteorit MARZ2-2 (Russian Federation) Operational 32 Before 30 30 Oki RS2-80 (Japan) Operational 33 Before 31 31 VIZ/Valcom type A pressure-commutated (Canada) Operational 34 Before 32 32 Shanghai Radio (China) Operational 35 Before 33 33 UK Met Office MK3 (UK) Operational 36 Before 34 34 Vinohrady (Czech Republic) Operational 37 Before 35 35 Vaisala RS18 (Finland) Operational 38 Before 36 36 Vaisala RS21 (Finland) Operational 39 Before 37 37 Vaisala RS80 (Finland) Operational 40 Before 38 38 VIZ LOCATE Loran-C (United States) Operational 41 Before 39 39 Sprenger E076 (Germany) Operational 42 Before 40 40 Sprenger E084 (Germany) Operational 43 Before 41 41 Sprenger E085 (Germany) Operational 44 Before 42 42 Sprenger E086 (Germany) Operational 45 Before 43 43 AIR IS - 4A - 1680 (United States) Operational 46 Before 44 44 AIR IS - 4A - 1680 X (United States) Operational 47 Before 45 45 RS MSS (United States) Operational 48 Before 46 46 AIR IS - 4A - 403 (United States) Operational 49 Before 47 47 Meisei RS2-91 (Japan) Operational 50 Before 48 48 VALCOM (Canada) Operational 51 Before 49 49 VIZ MARK II (United States) Operational 53 Before 50 50 Graw DFM-90 (Germany) Operational 54 Before 51 51 VIZ-B2 (United States) Operational 55 Before 52 52 Vaisala RS80-57H Operational 56 Before 53 53 AVK-RF95 (Russian Federation) Operational 57 Before 54 54 Graw DFM-97 (Germany) Operational 58 Before 55 55 Meisei RS-01G (Japan) Operational 59 Before 56 56 M2K2 (France) Operational 60 Before 57 57 Modem M2K2-DC (France) Operational 61 Before 58 58 AVK-BAR (Russian Federation) Operational 62 Before 59 59 Modem M2K2-R 1680 MHz RDF radiosonde with pressure sensor chip (France) Operational 63 Before 60 60 Vaisala RS80/MicroCora (Finland) Operational 64 Before 61 61 Vaisala RS80/Loran/Digicora I, II or Marwin (Finland) Operational 65 Before 62 62 Vaisala RS80/PCCora (Finland) Operational 66 Before 63 63 Vaisala RS80/Star (Finland) Operational 67 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 68 Before 65 65 VIZ transponder radiosonde, model number 1499–520 (United States) Operational 69 Before 66 66 Vaisala RS80 /Autosonde (Finland) Operational 70 Before 67 67 Vaisala RS80/Digicora III (Finland) Operational 71 Before 68 68 AVK-RZM-2 (Russian Federation) Operational 72 Before 69 69 MARL-A or Vektor-M-RZM-2 (Russian Federation) Operational 73 Before 70 70 Vaisala RS92/Star (Finland) Operational 74 Before 71 71 Vaisala RS90/Loran/Digicora I, II or Marwin (Finland) Operational 75 Before 72 72 Vaisala RS90/PC-Cora (Finland) Operational 76 Before 73 73 Vaisala RS90/Autosonde (Finland) Operational 77 Before 74 74 Vaisala RS90/Star (Finland) Operational 78 Before 75 75 AVK-MRZ-ARMA (Russian Federation) Operational 79 Before 76 76 AVK-RF95-ARMA (Russian Federation) Operational 80 Before 77 77 GEOLINK GPSonde GL98 (France) Operational 81 Before 78 78 Vaisala RS90/Digicora III (Finland) Operational 82 Before 79 79 Vaisala RS92/Digicora I,II or Marwin (Finland) Operational 83 Before 80 80 Vaisala RS92/Digicora III (Finland) Operational 84 Before 81 81 Vaisala RS92/Autosonde (Finland) Operational 85 Before 82 82 Sippican MK2 GPS/STAR (United States) with rod thermistor, carbon element and derived pressure Operational 86 Before 83 83 Sippican MK2 GPS/W9000 (United States) with rod thermistor, carbon element and derived pressure Operational 87 Needed 84 84 VacantOperational 89 Before 85 85 Sippican MARK IIA with chip thermistor, carbon element and derived pressure from GPS height Operational 90 Before 86 86 Sippican MARK II with chip thermistor, pressure and carbon element Operational 91 Before 87 87 Sippican MARK IIA with chip thermistor, pressure and carbon element Operational 92 Before 88 88 MARL-A or Vektor-M-MRZ (Russian Federation) Operational 93 Before 89 89 MARL-A or Vektor-M-BAR (Russian Federation) Operational 94 Not applicable 90 90 Radiosonde not specified or unknown Operational 95 Not applicable 91 91 Pressure only radiosonde Operational 96 Not applicable 92 92 Pressure only radiosonde plus transponder Operational 97 Not applicable 93 93 Pressure only radiosonde plus radar reflector Operational 98 Not applicable 94 94 No pressure radiosonde plus transponder Operational 99 Not applicable 95 95 No pressure radiosonde plus radar reflector Operational 100 Not applicable 96 96 Descending radiosonde Operational 101 Before 97 97 BAT-16P (South Africa) Operational 102 Before 98 98 BAT-16G (South Africa) Operational 103 Before 99 99 BAT-4G (South Africa) Operational 104 Not available 100 Reserved for BUFR only Operational 105 01 101 Not vacant Operational 106 Not available 102-106 Reserved for BUFR only Operational 107 07 107 Not vacant Operational 108 Not available 108-109 Reserved for BUFR only Operational 109 01/01/2008 10 110 Sippican LMS5 w/Chip Thermistor, duct mounted capacitance relative humidity sensor and derived pressure from GPS height Operational 110 01/01/2008 11 111 Sippican LMS6 w/Chip Thermistor, external boom mounted capacitance relative humidity sensor, and derived pressure from GPS height Operational 111 12 112 Not vacant Operational 112 15/09/2010 13 113 Vaisala RS92/MARWIN MW32 (Finland) Operational 113 03/11/2011 14 114 Vaisala RS92/DigiCORA MW41 (Finland) Operational 114 01/12/2011 15 115 PAZA-12M/Radiotheodolite-UL (Ukraine) Operational 115 01/12/2011 16 116 PAZA-22/AVK-1 (Ukraine) Operational 116 02/05/2012 17 117 Graw DFM-09 (Germany) Operational 117 18 118 Not vacant Operational 118 Needed 19 119 Vacant Operational 119 20-21 120-121 Not vacant Operational 120 02/05/2012 22 122 Meisei RS-11G GPS radiosonde w/thermistor, capacitance relative humidity sensor, and derived pressure from GPS height (Japan) Operational 121 03/11/2011 23 123 Vaisala RS41/DigiCORA MW41 (Finland) Operational 122 03/11/2011 24 124 Vaisala RS41/AUTOSONDE (Finland) Operational 123 03/11/2011 25 125 Vaisala RS41/MARWIN MW32 (Finland) Operational 124 26-27 126-127 Not vacant Operational 125 15/09/2011 28 128 AVK - AK2-02 (Russian Federation) Operational 126 15/09/2011 29 129 MARL-A or Vektor-M - AK2-02 (Russian Federation) Operational 127 01/01/2010 30 130 Meisei RS-06G (Japan) Operational 128 03/11/2011 31 131 Taiyuan GTS1-1/GFE(L) (China ) Operational 129 03/11/2011 32 132 Shanghai GTS1/GFE(L) (China) Operational 130 03/11/2011 33 133 Nanjing GTS1-2/GFE(L) (China) Operational 131 Needed 34-36 134-136 Vacant Operational 132 37 137 Not vacant Operational 133 Needed 38-40 138-140 Vacant Operational 134 03/11/2011 41 141 Vaisala RS41 with pressure derived from GPS height/DigiCORA MW41 (Finland) Operational 135 03/11/2011 42 142 Vaisala RS41 with pressure derived from GPS height/AUTOSONDE (Finland) Operational 136 Needed 43-46 143-146 Vacant Operational 137 47 147 Not vacant Operational 138 02/05/2012 48 148 PAZA-22M/MARL-A Operational 139 49 149 Not vacant Operational 140 Needed 50 150 Vacant Operational 141 51 151 Not vacant Operational 142 03/11/2011 52 152 Vaisala RS92-NGP/Intermet IMS-2000 (United States) Operational 143 53-59 153-159 Not vacant Operational 144 Needed 60 160 Vacant Operational 145 61 161 Not vacant Operational 146 Needed 62-66 162-166 Vacant Operational 147 67-72 167-172 Not vacant Operational 148 Needed 73 173 Vacant Operational 149 74-76 174-176 Not vacant Operational 150 15/03/2010 77 177 Modem GPSonde M10 (France) Operational 151 78-81 178-181 Not vacant Operational 152 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 153 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 155 84-89 184-189 Not vacant Operational 156 Not available 190-196 Reserved for BUFR only Operational 157 97-99 197-199 Not vacant Operational 158 Not available 200-254 Reserved for BUFR only Operational 159 255 Missing value Operational