B4-44 RELEASE AND RECORDER RECORD 
17.4 Adjusted Paper-Drift. If the low-reference had been adjusted dur- 
ing or after the paper drift, use the following method. Subtract from 95.0 
the ordinate value to be corrected. Multiply the remainder by the paper- 
drift correction at the given level and divide the product by 95. The quo- 
tient will be the required correction for the ordinate. For example, if 
the temperature ordinate (after application of recorder correction) ata 
given level is 40.3, and the paper-drift is 0.7 ordinate, the correction 
would be computed as follows: 95.0 - 40.3 = 54.7. Therefore, 54.7 x 0.7 = 
95 
0.4, the required paper-drift correction for an ordinate of 40.3. 
18. Post-Sounding Zero Recording. After the termination of the ob- 
servation, secure, if possible, a recording of the first high reference on 
the descent and then obtain a recordofthe recorder zero. One-half inch 
or more of the zero recording after the termination of the observation 
will be included as part of the record. 
19. Reason for Termination. Enter the reason for the termination of 
the sounding slightly above the last ascent levelevaluated (see Fig. B4-4), 
and in the station identification data stamped on the recorder record. A 
partial list of reasons follows: 
1. Balloon burst 
*2. Interference 
3. Leaking or floating balloon 
4, Weak or fading signal 
5. Unstable signal 
*6. Switching failure 
*7. Excessive missing data 
*8. Radiosonde failure 
*9. Ground equipment failure 
*10. Power failure 
11. . Military alert 
*These should be explained by a note on the first fold of the recorder 
record, 
PAIL (oy) FMH#3 
