Since this station is comparatively new and the personnel relatively untrained, the following system was used in preparing these data. The USCGS H times and deltas, measured on a large, inaccurate globe, were used in conjunction with Gutenberg time-charts to identify each phase. The identifications were made by Edward L. Hazelwood and are as accurate as this method will permit.
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Hazelwood, Edward L.; Hull, Louis V.; and Laramore, Harriss
"Bulletin No. 1, The Dallas Seismological Observatory, January 1-March 31, 1954,"
Field and Laboratory: Vol. 23
Available at: https://scholar.smu.edu/fieldandlab/vol23/iss2/4