Values of TAI-TA(laboratory) for 1991. 0.0 denotes that no value is available. Unit is one microsecond. For NISA and NIST add -45000 microseconds. For RC add 18000000 microseconds. For SU and USNO add respectively 2827000 and -34000 microseconds. Example, for MJD = 48279, TAI-TA(USNO) = -34617.524 microseconds. AOS CH F JATC NIST NIM NRC PTB CRL SO SU USNO APL CSAO NISA AUS RC KRIS 48259 -37.190 -68.816 87.598 -0.394-157.185 -11.562 16.758-359.762 48259 1.441 -45.312 257.823-616.166 -1.191 26.604 -70.206 -32.256 48259-274.924 -0.220 48269 -38.490 -68.938 87.899 -0.319-157.844 -11.588 16.819-359.775 48269 1.625 -45.257 257.883-616.859 -1.275 26.165 -70.499 -32.426 48269 0.0 -1.220 48279 -39.520 -69.052 88.191 -0.254-158.477 -11.199 16.944-359.792 48279 1.767 -45.239 257.778-617.524 -1.269 25.999 -70.771 -32.614 48279 0.0 -2.182 48289 0.0 -69.154 88.476 -0.058-159.119 -11.138 16.963-359.820 48289 1.923 -45.102 257.621-618.188 -1.309 25.858 -71.066 -32.786 48289 0.0 -3.125 48299 0.0 -69.256 88.745 0.144-159.738 -11.186 16.998-359.837 48299 2.081 -44.877 257.451-618.904 -1.321 25.702 -71.339 -32.919 48299-277.249 -4.071 48309 0.0 -69.356 89.020 0.411-160.376 -11.189 17.053-359.841 48309 2.232 -44.736 257.434-619.609 -1.325 25.548 -71.617 -33.063 48309-277.955 -4.969 48319 0.0 -69.459 89.322 0.367-160.957 -11.278 17.168-359.839 48319 2.394 -44.721 257.515-620.296 -1.311 26.164 -71.881 -33.204 48319-278.861 -5.884 48329 0.0 -69.571 89.612 0.508-161.575 -11.169 17.189-359.866 48329 2.556 -44.692 257.396-620.964 -1.326 26.043 -72.165 -33.358 48329-279.635 -6.661 48339 0.0 -69.641 89.941 0.661-162.196 -11.184 17.298-359.867 48339 2.725 -44.717 257.298-621.614 -1.398 25.906 -72.440 -33.518 48339-280.088 -7.351 48349 0.0 -69.678 90.239 0.874-162.823 -11.185 17.403-359.897 48349 2.881 -44.756 257.201-622.295 -1.427 25.758 -72.728 -33.650 48349-281.250 -8.108 48359 0.0 -69.720 90.533 1.158-163.453 -11.115 17.498-359.923 48359 3.012 -44.599 257.085-622.940 -1.458 25.665 -73.026 -33.774 48359-281.493 -8.863 48369 0.0 -69.808 90.815 1.362-164.089 -10.965 17.622-359.953 48369 3.192 -44.476 256.992-623.584 -1.480 25.639 -73.326 -33.930 48369-282.195 -9.625 48379 0.0 -69.825 91.103 1.491-164.714 -10.896 17.761-359.951 48379 3.344 -44.511 256.922-624.241 -1.498 25.522 -73.605 -34.090 48379-282.683 -10.337 48389 0.0 -69.830 91.397 1.524-165.350 -10.818 17.889-359.954 48389 3.523 -44.600 256.782-624.906 -1.559 25.445 -73.891 -34.273 48389-283.198 -11.018 48399 0.0 -69.924 91.683 1.595-165.998 -10.704 17.965-359.961 48399 3.693 -44.585 256.699-625.578 -1.590 25.398 -74.192 -34.403 48399-283.952 -11.754 48409 0.0 -70.003 91.973 1.642-166.652 -10.716 17.992-359.976 48409 3.860 -44.671 256.569-626.240 -1.628 25.375 -74.499 -34.611 48409-284.690 -12.471 48419 0.0 -70.093 92.275 1.980-167.302 -10.743 18.037-359.982 48419 4.021 -44.496 256.485-626.905 -1.607 25.236 -74.799 -34.771 48419-285.455 -13.142 48429 0.0 -70.199 92.582 2.041-167.945 -10.682 18.043-359.990 48429 4.171 -44.572 256.368-627.565 -1.606 25.114 -75.093 -34.985 48429-285.993 -13.847 48439 0.0 -70.316 92.889 2.004-168.598 -10.785 18.039-360.003 48439 4.330 -44.702 256.265-628.225 -1.626 24.988 -75.393 -35.306 48439-286.939 -14.522 48449 0.0 -70.429 93.200 2.057-169.239 -10.861 18.118-359.982 48449 4.479 -44.699 256.130-628.895 -1.631 24.887 -75.688 -35.532 48449-287.781 -15.183 48459 0.0 -70.519 93.519 2.201-169.880 -10.827 18.157-359.966 48459 4.638 -44.658 256.037-629.562 -1.702 24.785 -75.986 -35.837 48459-288.577 -15.841 48469 0.0 -70.639 93.812 2.216-170.536 -10.754 18.159-359.967 48469 4.783 -44.771 255.925-630.235 -1.713 24.706 -76.301 -35.988 48469-289.389 -16.483 48479 0.0 -70.754 94.094 2.334-171.190 -10.698 18.191-359.971 48479 4.943 -44.847 255.762-630.908 -1.654 24.563 -76.600 -36.207 48479-290.296 -17.153 48489 0.0 -70.856 94.381 2.428-171.863 -10.623 18.164-359.994 48489 5.100 -44.863 255.633-631.563 -1.601 24.445 -76.922 -36.449 48489-291.161 -17.785 48499 0.0 -70.962 94.682 2.536-172.508 -10.563 18.159-360.009 48499 5.254 -44.911 255.523-632.219 -1.669 24.457 -77.230 -36.648 48499-292.099 -18.444 48509 0.0 -71.069 94.987 -1.436-173.159 -10.538 18.155-360.025 48509 5.431 -44.926 255.473-632.890 -1.698 24.393 -77.553 -36.810 48509-292.926 -19.111 48519 0.0 -71.168 95.292 -1.344-173.807 -10.661 18.126-360.030 48519 5.591 -45.045 255.325-633.573 -1.688 24.231 -77.867 -37.002 48519-293.987 -19.818 48529 0.0 -71.241 95.618 -1.367-174.454 -10.556 18.110-360.038 48529 5.784 -45.071 255.253-634.236 -1.683 24.091 -78.182 -37.293 48529-294.946 -20.393 48539 0.0 -71.336 95.926 -1.095-175.128 -10.388 18.039-360.055 48539 6.000 -45.009 255.151-634.922 -1.724 24.124 -78.519 -37.441 48539-295.209 -21.000 48549 0.0 -71.394 96.239 -0.906-175.786 -10.366 18.027-360.046 48549 6.189 -45.003 255.010-635.589 -1.703 24.004 -78.853 -37.565 48549-295.388 -21.599 48559 0.0 -71.485 96.545 -0.839-176.472 -10.260 17.996-360.058 48559 6.426 -45.058 254.937-636.284 -1.706 23.844 -79.211 -37.727 48559-295.793 -22.145 48569 0.0 -71.588 96.851 -0.746-177.134 -10.229 17.936-360.069 48569 6.653 -45.103 254.854-636.950 -1.665 23.653 -79.533 -37.950 48569-296.422 -22.697 48579 0.0 -71.726 97.163 -0.545-177.800 -10.222 17.826-360.077 48579 6.904 -45.150 254.731-637.618 -1.631 23.551 -79.867 -38.133 48579-296.611 -23.192 48589 0.0 -71.871 97.450 -0.463-178.481 -10.070 17.720-360.101 48589 7.134 -44.976 254.617-638.284 -1.626 23.466 -80.224 -38.271 48589-296.931 -23.487 48599 0.0 -71.988 97.751 -0.219-179.153 -10.055 17.630-360.121 48599 7.385 -44.861 254.551-638.953 -1.592 23.354 -80.574 -38.437 48599-297.425 -23.800 48609 0.0 -72.075 98.071 -0.250-179.807 -10.039 17.549-360.126 48609 7.647 -44.958 254.450-639.631 -1.568 23.140 -80.918 -38.570 48609-297.577 -24.188 48619 0.0 -72.153 98.387 -0.188-180.464 -10.092 17.467-360.139 48619 7.907 -45.026 254.394-640.307 -1.516 23.004 -81.260 -38.598 48619-297.855 -24.567