0 0 RESERVED
1 1 BREWER SPECTROPHOTOMETER
2 2 CAVER TEICHERT
3 3 DOBSON
4 4 DOBSON (JAPAN)
5 5 EHMET
6 6 FECKER TELESCOPE
7 7 HOELPER
8 8 JODMETER
9 9 FILTER OZONOMETER M-83
10 10 MAST
11 11 OXFORD
12 12 PAETZOLD
13 13 REGENER
14 14 RESERVED FOR FUTURE USE
15 15 VASSY FILTER OZONOMETER
16 16 CARBON IODIDE
17 17 SURFACE OZONE BUBBLER
18 18 FILTER OZONOMETER M-124
19 19 ECC SONDE
127 127 MISSING VALUE
