This series represents the difference in time between a cesium beam atomic clock and an official time scale known as UTC(USNO) maintained by the US Naval Observatory, Washington DC. The UTC portion of the USNO series refers to coordinate universal time which is used as an international time standard. Negative values in the resulting (difference) series represents a lag in time relative to the UTC(USNO) standard. The differences in time were recorded at the same time for consecutive days in the 1970s resulting in a sampling interval of 1 day. The amplitude units
此系列代表了铯原子钟和官方称为UTC,华盛顿特区的美国海军天文台(USNO)保持的时间尺度之间的时间差。根据USNO系列该UTC部是指它被用作一个国际标准时间,协调通用时间。在所得到的(差)系列的负数值表示相对于UTC(USNO)标准时间滞后。记录时间的差异,导致在一个采样间隔为1天在20世纪70年代在同一时间连续数天。幅度单位