A second significant Extremely Low Frequency (ELF) pattern has been observed in data which has been collected at two different locations approximately 140 miles apart in New Mexico. This pattern is that of what appears to be pulsed ELF data occurring at a definite period of 10 seconds. This pattern is in addition to the previously identified pattern of geometric multiples of 4Hz. The previous pattern is primarily that of frequency structure; the current attention is devoted to the time structure of the signals that are becoming evident. Graphs of the captured periodic data is presented on this page, as raw data, digital filtered data to eliminate noise, and spectral analysis of the filtered data. The periodic component of 10 seconds is dominant and prominent in all analyses. These findings combined (geometric multiples of frequencies with a periodic component) strong suggest the existence of modulated ELF data, i.e., the transmission of signals with inherent intelligence. A description of the techniques used to capture this data is presented here, which includes using a human antenna. It bears repeating that the ELF frequencies that have been measured and detected fall within the same range as foes the primary electromagnetic energy of the human brain. Those with expertise in the electrical engineering fields are encouraged to assist in the research that is required to further analyze these results.