[J] University of California Chronicle, 1915, 17:1–25, Berkeley.
[K] Monthly Weather Review, 1914, 42:410, Washington.
Of especial interest to the aviator is the table on the next page which shows wind velocities increasing with elevation as determined by observations of the Avalon balloons.
Record of Avalon Ascents, July-August, 1913
Table showing Theodolite observations of wind velocities (meters per second)
at elevations of 1,000 and 5,000 meters
| Meters | Meters per second 5 p.m. July 24 | Meters per second 5 p.m. July 27 | Meters per second 10 a.m. July 31 | Meters per second 10 a.m. Aug. 1 | Meters per second 10 a.m. Aug. 2 | Meters per second 5 p.m. Aug. 3 | Meters per second 4 p.m. Aug. 7 | Meters per second 5 p.m. Aug. 8 | Mean |
| 1,000 | 2.5 | 1.0 | 5.6 | 6.6 | 2.3 | 5.8 | 7.1 | 1.9 | 4.1 |
| 1,500 | 6.2 | 0.8 | 6.2 | 8.1 | 3.3 | 5.0 | 6.4 | 1.5 | 4.7 |
| 2,000 | 8.0 | 1.2 | 5.8 | 7.0 | 4.1 | 4.5 | 6.5 | 6.0 | 5.4 |
| 2,500 | 10.0 | 1.8 | 10.8 | 5.7 | 5.2 | 4.2 | 4.7 | 3.6 | 5.8 |
| 3,000 | 12.0 | 2.3 | 9.4 | 6.1 | 7.2 | 5.2 | 3.5 | 4.1 | 6.2 |
| 3,500 | 12.8 | 2.5 | 8.0 | 6.7 | 7.4 | 6.1 | 4.6 | 4.6 | 6.6 |
| 4,000 | 13.6 | 3.8 | 11.2 | 7.4 | 9.2 | 5.2 | 6.4 | 3.2 | 7.5 |
| 4,500 | 14.3 | 5.2 | 14.6 | 8.5 | 11.2 | 1.8 | 7.8 | 3.0 | 8.3 |
| 5,000 | 21.2 | 6.2 | 12.8 | 10.3 | 10.4 | 2.3 | 3.4 | 9.5 |
Charts Showing Upper-air Weather Conditions.—It is believed that the following charts when examined in connection with the accompanying explanation in the text will give the reader something of an outline as to the conditions existing in the upper regions of the atmosphere.
CHART NO. 1
Horizontal Projections of the Paths of the Sounding Balloons Liberated at Avalon, California, July 23 to August 10, 1913