NOTES ON [TAI - TA(k)] AUS . From September 1, 1998, TA(AUS) has been realized at NML. CSAO. Starting on MJD = 50814, TA(CSAO) is a new independent local atomic time scale. Starting on MJD = 51179, the reported values of TAI-TA(CSAO) correspond to the new independent local time scale TA(CSAO). JATC. Apparent time step of TAI-TA(JATC) between MJD = 51174 and MJD = 51179. SU . Reported values are TAI-TA(SU) - 2.80 seconds.