C C ATOMIC CLOCK TIME DIFFERENCES (BEFORE CENTERING) C (UPPER PLOT OF FIGURE 1 OF 2006 METROLOGIA PAPER SHOWS CENTERED SERIES C IN NANOSECONDS, I.E., AFTER MULTIPLICATION BY 1.0E9 = 1,000,000,000) C C SOURCE: TIMING SOLUTIONS CORPORATION (SAM STEIN) C DELTA T: 1 SECOND C UNITS: SECONDS C SAMPLE SIZE: 4000 C