Values of UTC-UTC(laboratory) for 1991. 0.0 denotes that no value is available. Unit is one microsecond. Example, for MJD = 48269, UTC-UTC(PTB) = 3.625 microseconds. Note that time steps may occur in the values of UTC-UTC(laboratory). The known steps are reported in the Annual Report of the BIPM Time Section. AOS APL AUS BEV CAO CH CRL CSAO DPT FTZ IEN IFAG IGMA INPL JATC KRIS LDS NAOM NIM NIST NPL NPLI NRC NRLM OMH ONRJ OP ORB PEL PKNM PTB RC ROA SO SNT SU TAO TL TP TUG USNO VSL YUZM ZIPE NMC 48259 2.809 -0.684 0.135 -3.663 1.723 0.671 1.413 -6.237 48259 -23.563 18.483 0.422 2.687 0.342 -12.903 -19.513 -0.220 48259 -28.896 -6.067 7.309 -0.622 -1.102 -30.521 0.689 -22.922 48259 2.216 0.0 -0.289 12.828 0.0 5.698 3.638 -2.749 48259 7.879 2.054 -0.154 7.823 0.758 1.775 1.213 -4.234 48259 0.135 0.089 27.339 -0.012 0.0 48269 1.513 -0.768 0.137 -4.333 1.779 0.742 1.498 -6.475 48269 -23.803 18.681 0.282 2.895 0.316 -14.023 -20.118 -0.340 48269 -30.482 -6.190 7.262 -0.670 -1.204 -25.230 0.750 -23.605 48269 2.418 0.0 -0.307 13.196 0.0 5.977 3.625 0.0 48269 7.881 2.109 -0.121 7.883 0.800 1.576 1.260 -3.947 48269 0.137 0.094 27.196 -0.045 0.0 48279 0.483 -0.762 0.123 -5.030 1.748 0.823 1.564 -6.442 48279 -24.032 18.944 0.150 2.937 0.247 -15.170 -21.491 -0.442 48279 -31.988 -6.350 7.627 -0.697 -1.319 -25.016 0.875 -24.348 48279 2.763 0.0 -0.378 13.508 0.0 6.296 3.608 0.0 48279 7.839 2.117 -0.609 7.778 0.826 1.339 1.209 -3.735 48279 0.123 0.211 27.167 -0.072 0.0 48289 0.0 -0.802 0.096 -5.667 1.644 0.916 1.633 -6.382 48289 -24.294 19.090 0.009 3.012 0.273 -16.349 -22.659 -0.525 48289 -33.559 -6.497 7.663 -0.747 -1.467 0.0 0.894 -25.234 48289 2.289 10.061 -0.474 13.847 0.0 6.677 3.580 -2.958 48289 7.776 2.247 -0.833 7.621 0.833 1.157 1.081 -3.098 48289 0.096 0.303 27.403 -0.090 0.0 48299 0.0 -0.814 0.083 -6.485 1.619 1.011 1.672 -6.338 48299 -24.485 19.229 -0.127 3.310 0.282 -17.542 -23.915 -0.621 48299 -35.012 -6.626 7.591 -0.770 -1.667 0.0 0.929 -26.234 48299 2.208 10.204 -0.565 14.228 0.0 6.886 3.563 -2.646 48299 7.668 2.443 -0.731 7.451 0.860 0.958 0.795 -2.522 48299 0.083 0.284 27.427 0.103 0.0 48309 -1.117 -0.818 0.074 -7.180 1.708 1.114 1.672 -6.293 48309 -24.684 19.404 -0.108 3.694 0.381 -18.719 -25.113 -0.639 48309 -36.452 -6.762 7.568 -0.797 -1.741 0.0 0.984 -27.328 48309 2.211 10.807 -0.596 14.760 0.0 7.137 3.559 -2.514 48309 7.541 2.569 -0.569 7.434 0.861 0.966 0.512 -1.814 48309 0.074 0.290 28.145 0.039 0.0 48319 -1.455 -0.804 0.090 6.896 1.583 1.212 1.696 -5.477 48319 -24.773 19.557 -0.091 3.982 0.343 -19.863 -25.736 -0.684 48319 -37.861 -6.869 7.456 -0.812 -1.778 0.0 1.099 -28.424 48319 2.343 11.204 -0.614 14.893 0.0 7.255 3.561 -2.560 48319 7.494 2.576 -0.368 7.515 0.898 0.993 0.430 -1.209 48319 0.090 0.407 30.875 -0.109 0.0 48329 -2.239 -0.819 0.086 5.445 1.250 1.302 1.713 -5.398 48329 -24.967 19.622 -0.092 4.265 0.347 -21.030 -25.939 -0.511 48329 -39.274 -6.974 7.544 -0.846 -1.719 0.0 1.120 -29.559 48329 2.382 11.241 -0.638 15.227 0.0 6.962 3.534 -2.453 48329 7.436 2.599 -0.212 7.396 0.898 1.032 0.384 -0.592 48329 0.086 0.429 32.014 -0.226 0.0 48339 -3.041 -0.891 0.105 0.0 0.941 1.429 1.742 -5.335 48339 -25.136 19.722 -0.069 4.427 0.377 -22.182 -26.196 -0.291 48339 -40.677 -7.071 7.506 -0.871 -1.609 0.0 1.229 -30.796 48339 2.609 11.202 -0.632 15.557 0.0 6.367 3.533 -2.128 48339 7.346 2.606 -0.020 7.298 0.918 1.099 0.373 0.054 48339 0.105 0.443 34.455 -0.407 0.0 48349 -3.258 -0.920 0.122 2.678 0.425 1.595 1.758 -5.282 48349 -25.331 19.832 -0.048 4.842 0.376 -23.350 -26.454 -0.098 48349 0.0 -7.187 7.486 -0.906 -1.559 0.0 1.334 -32.024 48349 3.518 11.189 -0.659 15.947 0.513 5.849 3.503 -2.556 48349 7.247 2.603 0.067 7.201 0.922 1.286 0.279 0.789 48349 0.122 0.538 34.455 -0.407 0.0 48359 -2.315 -0.951 0.127 1.965 -0.346 1.732 1.747 -5.176 48359 -25.403 19.947 -0.073 5.142 0.439 -24.534 -26.433 0.087 48359 1.749 -7.343 7.538 -0.944 -1.430 0.0 1.429 -33.436 48359 3.747 11.408 -0.701 2.080 0.489 4.103 3.477 -2.187 48359 7.135 2.774 0.047 7.085 0.914 1.478 0.230 1.503 48359 0.127 0.590 35.077 -0.313 0.0 48369 -2.947 -0.973 0.154 1.259 -9.923 1.805 1.787 -5.001 48369 -25.423 20.113 -0.092 5.370 0.521 -25.728 -26.116 0.295 48369 1.008 -7.467 7.672 -0.984 -1.282 0.0 1.553 -34.942 48369 3.902 11.381 -0.758 1.921 0.552 4.492 3.447 -2.240 48369 7.066 2.902 0.138 6.992 0.942 1.634 0.167 2.048 48369 0.154 0.625 35.388 -0.183 0.0 48379 -2.855 -0.991 0.201 0.561 -10.706 1.948 1.790 -4.918 48379 -25.492 20.259 -0.090 5.599 0.500 -26.913 -25.772 0.533 48379 0.285 -7.580 7.722 -1.000 -1.113 0.0 1.692 -36.627 48379 3.844 11.846 -0.801 1.898 0.568 4.040 3.449 -2.054 48379 7.019 2.877 0.218 6.922 0.951 1.781 0.126 2.774 48379 0.201 0.706 33.978 0.049 0.0 48389 -2.945 -1.052 0.264 -0.223 -11.000 2.069 1.828 -4.796 48389 -25.466 20.394 -0.068 5.787 0.462 -28.098 -25.316 0.772 48389 -0.681 -7.686 7.781 -1.011 -0.968 0.0 1.820 -37.930 48389 3.549 12.590 -0.857 1.877 0.607 3.495 3.446 -1.870 48389 6.929 2.784 0.198 6.782 0.955 1.920 0.061 3.486 48389 0.264 0.758 33.254 0.156 0.0 48399 -3.260 -1.083 0.299 -1.002 -11.233 2.080 1.855 -4.642 48399 -25.487 20.555 -0.152 6.042 0.420 -29.290 -25.086 0.926 48399 -1.522 -7.803 7.878 -1.037 -0.797 0.0 1.896 -39.264 48399 3.346 13.085 -0.922 1.945 0.592 2.854 3.439 -1.990 48399 6.844 2.781 0.084 6.699 0.989 1.943 0.036 4.194 48399 0.299 0.864 33.205 0.209 0.0 48409 -3.747 -1.121 0.327 -1.893 -1.666 2.110 1.883 -4.466 48409 -25.475 20.688 -0.279 6.253 0.365 -30.489 -24.991 1.069 48409 -2.256 -7.941 7.846 -1.068 -0.634 0.0 1.923 -40.652 48409 3.336 13.639 -0.948 2.015 0.0 2.333 3.424 -2.049 48409 6.732 2.697 0.040 6.569 0.986 2.058 0.012 -4.288 48409 0.327 0.957 32.253 0.084 0.0 48419 -4.261 -1.100 0.351 -2.719 -1.874 2.101 1.910 -4.405 48419 -25.465 20.776 -0.400 0.595 0.336 -31.699 -24.929 1.218 48419 -2.990 -8.035 7.801 -1.083 -0.615 0.0 1.968 -42.004 48419 3.207 14.017 -0.944 2.029 0.436 1.771 3.418 -2.117 48419 6.669 2.893 0.119 6.485 1.007 2.100 -0.133 -3.962 48419 0.351 1.030 31.100 -0.002 0.0 48429 -4.767 -1.099 0.359 -3.533 -2.236 2.051 1.952 -4.327 48429 -25.466 20.894 -0.508 0.953 0.244 -32.890 -24.699 1.233 48429 -3.783 -8.160 7.839 -1.092 -0.647 0.0 1.974 -43.556 48429 3.213 13.785 -0.944 1.948 0.468 1.316 3.410 -1.964 48429 6.588 2.804 0.254 6.368 1.012 2.133 -0.180 -3.604 48429 0.359 1.065 32.759 -0.020 0.0 48439-889.831 -1.119 0.337 -4.414 -2.596 1.993 1.981 -4.253 48439 -25.473 21.011 -0.636 1.288 0.120 -34.095 -24.701 1.208 48439 -4.550 -8.271 7.734 -1.106 -0.626 0.0 1.970 -45.171 48439 3.300 13.726 -0.944 1.826 0.473 0.834 3.396 -2.220 48439 6.490 2.661 0.288 6.265 1.037 2.174 -0.253 -3.286 48439 0.337 1.143 32.525 -0.004 0.0 48449 -0.824 -1.124 0.309 -5.265 -3.098 1.941 2.000 -4.154 48449 -25.409 21.144 -0.766 1.318 0.015 -35.310 -24.532 1.207 48449 -5.368 -8.388 7.640 -1.100 -0.540 0.0 2.049 -46.849 48449 3.221 14.077 -0.910 1.554 0.324 0.249 3.418 -2.283 48449 6.363 2.672 0.279 6.130 1.043 2.266 -0.327 -2.942 48449 0.309 1.289 41.779 -0.142 0.0 48459 -0.503 -1.195 0.289 -6.093 -3.550 1.911 2.030 -4.056 48459 -25.290 21.301 -0.868 1.342 -0.066 -36.532 -24.280 1.119 48459 -5.953 -8.509 7.652 -1.098 -0.434 0.0 2.088 -48.583 48459 3.115 14.158 -0.886 1.526 0.130 -0.327 3.434 -2.301 48459 6.295 2.707 0.335 6.037 1.066 2.349 -0.473 -2.597 48459 0.289 1.359 49.251 -0.286 0.0 48469 1.282 -1.206 0.264 -6.824 -4.004 1.848 2.045 -3.935 48469 -25.061 21.510 -0.971 1.566 -0.238 -37.787 -24.048 1.027 48469 -6.722 -8.641 7.708 -1.113 -0.349 0.0 2.090 -50.468 48469 3.152 13.680 -0.886 1.859 0.055 -0.683 3.433 -2.335 48469 6.276 2.594 0.235 5.925 1.074 2.372 -0.607 -2.292 48469 0.264 1.438 48.943 -0.307 0.0 48479 2.320 -1.147 0.237 -7.581 -4.415 1.788 2.074 -3.878 48479 -24.892 21.678 -1.000 1.408 -0.397 -39.038 -23.875 0.937 48479 -7.331 -8.765 7.740 -1.097 -0.297 0.0 2.122 -52.559 48479 3.094 13.306 -0.893 2.128 0.0 -0.864 3.429 -2.464 48479 6.281 2.521 0.163 5.762 1.098 2.402 -0.628 -1.969 48479 0.237 1.584 49.751 -0.271 0.0 48489 0.127 -1.094 0.204 -8.521 -4.735 1.743 2.082 -3.796 48489 -24.784 21.776 -0.955 1.534 -0.534 -0.275 -23.639 0.855 48489 -8.043 -8.914 7.789 -1.104 -0.278 0.0 2.095 -54.677 48489 3.385 12.857 -0.877 2.168 0.0 -1.015 3.406 -2.538 48489 6.242 2.513 0.174 5.634 1.122 2.508 -0.625 -1.611 48489 0.204 1.684 49.050 -0.224 0.0 48499 -0.161 -1.162 0.191 -9.339 0.0 1.697 2.081 -3.584 48499 -24.805 21.895 -0.965 1.614 -0.679 -0.352 -23.362 0.706 48499 -8.835 -9.058 7.828 -1.097 -0.173 0.0 2.090 -56.910 48499 3.212 12.647 -0.838 1.929 0.0 -0.934 3.391 -2.685 48499 6.194 2.434 0.173 5.523 1.158 2.702 -0.518 -1.318 48499 0.191 1.777 50.539 -0.219 0.0 48509 -0.384 -1.191 0.163 9.805 0.0 1.647 2.105 -3.448 48509 -24.709 22.173 -0.980 1.671 -0.834 -0.441 -27.190 0.629 48509 -9.607 -9.214 7.832 -1.092 -0.270 0.0 2.086 -59.180 48509 3.161 12.390 -0.830 1.610 0.0 -0.832 3.375 -2.692 48509 6.039 2.441 0.148 5.473 1.181 2.831 -0.456 -0.984 48509 0.163 1.883 51.720 -0.125 0.0 48519 -0.677 -1.181 0.144 8.938 0.0 1.606 2.113 -3.410 48519 -24.669 22.421 -1.001 1.739 -1.013 -0.545 -27.074 0.612 48519 -10.399 -9.323 7.687 -1.076 -0.304 0.0 2.057 -61.581 48519 2.877 11.909 -0.802 1.403 -0.752 -0.746 3.370 -2.931 48519 5.944 2.336 0.052 5.325 1.183 2.940 -0.521 -0.702 48519 0.144 1.950 51.347 -0.110 0.0 48529 -0.562 -1.176 0.139 8.078 0.0 1.589 2.159 -3.350 48529 -24.599 22.441 -1.021 1.749 -1.190 -0.647 -26.912 0.627 48529 -11.261 -9.427 7.768 -1.061 -0.403 0.0 2.041 -64.159 48529 2.839 11.516 -0.759 1.363 -0.810 -0.488 3.362 -3.069 48529 5.870 2.314 0.024 5.253 1.197 2.945 -0.433 -0.344 48529 0.139 1.948 51.066 -0.078 0.0 48539 -0.377 -1.217 0.128 7.198 0.0 1.545 2.189 -3.097 48539 -24.540 22.586 -1.091 1.782 -1.361 -0.762 -26.618 0.560 48539 -12.044 -9.390 7.915 -1.050 -0.522 0.0 1.970 -67.719 48539 2.927 0.0 -0.712 1.399 -0.984 -0.292 3.345 -3.073 48539 5.828 2.391 -0.003 5.152 1.211 2.934 -0.435 -0.018 48539 0.128 1.936 0.0 -0.095 0.0 48549 -0.341 -1.196 0.143 6.290 0.0 1.534 2.198 -3.017 48549 -24.526 22.774 -1.146 1.760 -1.443 -0.877 -26.572 0.561 48549 -12.737 -9.187 7.912 -1.034 -0.509 4.908 1.958 -74.474 48549 2.939 0.0 -0.653 1.331 -1.042 -0.105 3.354 -2.856 48549 5.533 2.401 0.022 5.010 1.199 2.843 -0.446 0.314 48549 0.143 1.944 0.0 -0.106 0.0 48559 0.093 -1.199 0.125 5.523 2.409 1.490 2.246 -2.977 48559 -24.563 22.908 -1.229 1.588 -1.441 -0.995 -26.508 0.615 48559 -13.525 -8.926 7.998 -1.042 -0.535 6.061 1.927 -80.961 48559 2.893 0.0 -0.651 1.465 -1.118 0.040 3.342 -2.863 48559 5.389 2.366 0.035 4.937 1.233 2.819 -0.547 0.602 48559 0.125 1.983 0.0 -0.198 -3.960 48569 0.613 -1.158 0.154 4.672 1.685 1.442 2.287 -2.988 48569 -24.640 23.002 -1.277 1.519 -1.396 -1.119 -26.550 0.643 48569 -14.135 -8.721 8.004 -0.998 -0.449 6.996 1.867 -87.069 48569 2.779 0.0 -0.675 1.502 -1.234 -0.015 3.331 -3.096 48569 5.326 2.315 0.042 4.854 1.249 2.762 -0.630 0.924 48569 0.154 2.009 0.0 -0.139 -4.066 48579 0.578 -1.124 0.167 3.791 0.817 1.365 2.358 -2.890 48579 -24.636 23.056 -1.289 1.475 -1.370 -1.117 -26.458 0.608 48579 -14.694 -8.514 7.991 -0.962 -0.386 8.265 1.757 -93.232 48579 -0.332 0.0 -0.653 1.615 -1.332 0.037 3.323 -2.679 48579 5.222 2.290 0.097 4.731 1.248 2.633 -0.695 1.201 48579 0.167 2.049 0.0 0.073 -4.173 48589 0.419 -1.119 0.163 3.065 0.044 1.283 2.399 -2.775 48589 -24.602 23.222 -1.269 1.401 -1.400 -1.206 -26.464 0.563 48589 -15.423 -8.321 8.121 -0.949 -0.312 9.945 1.651 -99.491 48589 2.982 0.0 -0.671 1.602 -1.437 -0.086 3.299 -2.352 48589 5.099 2.444 0.081 4.617 1.231 2.516 -0.801 1.512 48589 0.163 2.113 0.0 0.249 -3.736 48599 -1.142 -1.085 0.176 2.768 -0.085 1.235 2.462 -2.687 48599 -24.603 23.184 -1.230 1.498 -1.393 -1.329 -26.494 0.530 48599 0.0 -8.126 8.117 -0.913 -0.228 11.817 1.561-106.014 48599 2.652 0.0 -0.709 1.651 -1.437 0.044 3.279 -2.197 48599 4.978 2.560 0.124 4.551 1.236 2.385 -0.949 1.814 48599 0.176 2.248 0.0 0.0 -3.025 48609 -1.439 -1.061 0.189 2.025 -0.874 1.217 2.526 -2.701 48609 -24.585 23.185 -1.159 1.408 -1.396 -1.463 -26.627 0.472 48609 0.0 -7.927 8.111 -0.867 -0.145 13.717 1.480-112.622 48609 2.489 0.0 -0.704 1.709 -1.491 -0.018 3.274 -2.131 48609 4.878 2.468 0.107 4.450 1.232 2.261 -1.118 2.158 48609 0.189 2.373 0.0 0.0 -2.263 48619 -2.180 -1.009 0.196 1.220 -1.612 1.211 2.503 -2.637 48619 -24.528 23.310 -1.118 1.391 -1.406 -1.590 -26.627 0.413 48619 0.0 -7.737 8.039 -0.819 -0.055 15.498 1.398-119.478 48619 -90.185 0.0 -0.679 1.470 -1.379 -0.011 3.261 -2.581 48619 4.772 2.400 0.118 4.394 1.221 2.112 -1.297 2.532 48619 0.196 2.437 0.0 0.0 -0.906