| station | |||||||||||||||
| year | No | code | station name,location | Jan | Feb | Mar | Apr | .May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1973 | 1 | AAE | ADDIS ABABA,ETHIOPIA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 2 | AAM | ANN ARBOK,MICHIGAN | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 4 | ADE | ADELAIDE,AUSTRLIA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 5 | AFI | AFIAMALU,SAMOA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |||
| 1973 | 6 | AKU | AKUREYRI,ICELAND | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 7 | ALQ | ALBUQUERQUE,NEW MEXICO | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 8 | SAN | SANAE,ANTARCRICA | 2 | 4 | 5 | 6 | 7 | 8 | 10 | 11 | 12 | |||
| 1973 | 9 | ANT | ANTOFAFASTA,CHILE | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 11 | ARE | ARREQUIPA,PERU | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 14 | BAG | BAGUIO CITY,PHILIPPINES | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 15 | BEC | BERMUDA-COLUMBIA,BERMUDA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 17 | BHP | BALNOA HEIGHTS,CANAL ZONE | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 18 | BKS | BYERLY,CALIFORNIA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 19 | BLA | BLACKSBURG,VIRGINIA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 20 | LEM | LEMBANG,,JAVA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 21 | BOG | BOGOTA,COLUMBIA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 23 | BUL | BULAWAYO,RHODESIA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 24 | CAR | CARACAS,VENEZUELA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 26 | CHG | CHIENGMAI,THAILAND | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 28 | COL | COLLEGE DOTPOST,ALASKA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 29 | COP | COPENHAGEN,DENMAK | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 30 | COR | CORVALLIS,ORGEGON | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 31 | CTA | CHARTERS TOWERS, QUEENSLAND | 9 | 10 | ||||||||||
| 1973 | 32 | DAL | DALLAS,TEXAS | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 33 | DAV | DAVO,PHILIPPINES | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 34 | EIL | EILAT,ISRAEL | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 35 | JCT | JUNCTION CITY,TEXAS | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 36 | DUG | DUGWAY,UTAH | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 37 | GEM | GRAHAMSTOWN,SOUTH AFRICS | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 38 | ESK | ESKDALEMUIR,SCOTLAND | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 40 | GDH | GODHAVN,GREENLAND | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 41 | GEO | GEORGETOWN,COLUMBIA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 43 | GOL | GOLDEN,COLORADO | 9 | 12 | ||||||||||
| 1973 | 44 | GUA | GUAM,GUAM | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 45 | HKC | HONG KONG,HONG KONG | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 48 | HNR | HONIARA,SOLOMON ISLANDS | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 50 | IST | ISTANBUL,TURKEY | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 52 | KEV | KEVO,FINLAND | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 53 | KIP | KIPAPA,HAWAII | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 54 | KOD | KODAIKANAL,INDIA | 11 | 12 | ||||||||||
| 1973 | 55 | KON | KONGSBERG,NORWAY | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 56 | NIL | NILORE,PAKISTAN | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 58 | LON | LONGMIRE,WASHINGTON | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 59 | LPA | LA PLATA,AGENTINA | 1 | 10 | 11 | 12 | ||||||||
| 1973 | 60 | LPB | LA PAZ,BOLIVIA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 61 | LPS | LA PALMA,EL SALVADOR | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 62 | SDB | SA DA BANDEIRA,ANGOLA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 63 | LUB | LUBBOCK,TEXAS | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 64 | MAT | MATRUSHIRO,JAPAN | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 65 | MAL | MALAGA,SPAIN | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 68 | SNG | SONGKHILA,THAILAND | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 70 | KBS | KINGSBAY,SPITSBERGEN | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 71 | MSH | MESHED,IRAN | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 72 | MUN | MUNDARING,AUSTRALIA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 73 | NAT | NATAL,BRAZIL | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 75 | NDI | DELHI,NEW DELHI,INDIA | 12 | |||||||||||
| 1973 | 78 | NNA | NANA,PERU | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 79 | DAG | DANMARKSHAVN,GREENLNAD | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 81 | NUR | NURMIJARVI,FINLAND | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 83 | OXF | OXFORD,MISSISSIPPI | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 85 | GSC | GOLDSTONE,CALIFORNIA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 86 | PMG | PORT MORESBY,PAPUA | 9 | |||||||||||
| 1973 | 87 | POO | POONA,INDIA | 11 | 12 | ||||||||||
| 1973 | 89 | PRE | PERTIRUA,SOUTH AFRICA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 91 | PTO | PORTO,PORTUGAL | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 92 | QUE | QUETTA,PAKISTAN | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 93 | QUI | QUITO,ECUADOR | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 94 | RAB | RABAUL,NEW BRITAIN | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 95 | RAR | RAROTONGA,COOK ISLANDS | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 97 | RIV | RIVERVIEW,NEW SOUTH WALES | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 100 | KTG | KAP TOBIN,GREENLAND | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | ||
| 1973 | 101 | SCP | STATE COLLEGE,PENSYLAVANIA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 1 | 11 | 12 |
| 1973 | 103 | SHA | SPRING HILL,ALABAMA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 104 | SHI | SHIRAZ,IRAN | 1 | 2 | 3 | 4 | 5 | 6 | 6 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 105 | SHL | SHILLONG,INDIA | 9 | 10 | 11 | 12 | ||||||||
| 1973 | 106 | SJG | SAN JUNA,PUERTO RICO | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 107 | SOM | SOMBRERO,CHILE | 9 | |||||||||||
| 1973 | 109 | STU | STUTTGART,WEST GERMANY | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 110 | TAB | TABRIZ,IRAN | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 112 | ANP | ANPU,REPUBLIC OF CHINA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 113 | TAU | TASMANIA UNIV,TASMANIA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 114 | SHK | SHIRAKI,JAPAN | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 115 | TOL | TOLEDO,SPAIN | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 117 | TRI | TRIESTE,ITALY | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 118 | TRN | TRINIDAD,TRIKNIDAD | 10 | |||||||||||
| 1973 | 119 | TUC | TUCSON,ARIZONA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 121 | VAL | VALENTIA,IRELAND | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 122 | WEL | WELLINGTON,NEW ZEALAND | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1973 | 123 | WES | WESTON,MASSACHUSETTS | 1 | 2 | 10 | 11 | ||||||||
| 1973 | 124 | WIN | WINDHHOEK,SOUTH WEST AFRICA | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |