| Substance | Rest Frequency |
| Deuterium (DI) | 327.348 MHz |
| Hydrogen (HI) | 1420.406 MHz |
| Hydroxyl radical (OH) | 1612.231 MHz |
| Hydroxyl radical (OH) | 1665.402 MHz |
| Hydroxyl radical (OH) | 1667.359 MHz |
| Hydroxyl radical (OH) | 1720.530 MHz |
| Methyladyne (CH) | 3263.794 MHz |
| Methyladyne (CH) | 3335.481 MHz |
| Methyladyne (CH) | 3349.193 MHz |
| Formaldehyde (H2CO) | 4829.660 MHz |
| Methanol (CH3OH) | 6668.518 MHz |
| Helium (3He+) | 8665.650 MHz |
| Methanol (CH3OH) | 12.178 GHz |
| Formaldehyde (H2CO) | 14.488 GHz |
| Cyclopropenylidene (C3H2) | 18.343 GHz |
| Cyclopropenylidene (C3H2) | 21.587 GHz |
| Water vapor (H2O) | 22.235 GHz |
| Dicarbon monosulphide (CCS) | 22.344 GHz |
| Ammonia (NH3) | 23.694 GHz |
| Ammonia (NH3) | 23.723 GHz |
| Ammonia (NH3) | 23.870 GHz |
| Ammonia (NH3) | 24.139 GHz |
| Methanol (CH3OH) | 36.169 GHz |
| Cyanoacetylene (HC3N) | 36.392 GHz |
| Silicon monoxide (SiO) | 42.519 GHz |
| Silicon monoxide (SiO) | 42.821 GHz |
| Silicon monoxide (SiO) | 42.880 GHz |
| Silicon monoxide (SiO) | 43.122 GHz |
| Silicon monoxide (SiO) | 43.424 GHz |
| Dicarbon monosulphide (CCS) | 45.379 GHz |
| Cyanoacetylene (HC3N) | 45.490 GHz |
| Carbon monosulphide (13CS) | 46.247 GHz |
| Carbon monosulphide (C34S) | 48.207 GHz |
| Carbon monosulphide (CS) | 48.991 GHz |
| Oxygen (O2) | 56.265 GHz |
| Oxygen (O2) | 58.324 GHz |
| Oxygen (O2) | 58.446 GHz |
| Oxygen (O2) | 59.164 GHz |
| Oxygen (O2) | 59.591 GHz |
| Oxygen (O2) | 60.306 GHz |
| Oxygen (O2) | 60.434 GHz |
| Oxygen (O2) | 61.151 GHz |
| Oxygen (O2) | 62.486 GHz |
| Deuterated formylium (DCO+) | 72.039 GHz |
| Deuterium cyanide (DCN) | 72.415 GHz |
| Cyanoacetylene (HC3N) | 72.784 GHz |
| Methyl cyanide (CH3CN) | 73.59 GHz |
| Deuterated water (HDO) | 80.578 GHz |
| Cyanoacetylene (HC3N) | 81.881 GHz |
| Cyclopropenylidene (C3H2) | 82.966 GHz |
| Cyclopropenylidene (C3H2) | 85.339 GHz |
| Methyl acetylene (CH3CCH) | 85.5 GHz |
| Deuterated Ammonia (NH2D) | 85.926 GHz |
| Hydrogen cyanide (HC15N) | 86.055 GHz |
| Silicon monoxide (SiO) | 86.243 GHz |
| Hydrogen cyanide (H13CN) | 86.340 GHz |
| Formylium (H13CO+) | 86.754 GHz |
| Hydrogen isocyanide (HN13C) | 87.091 GHz |
| Silicon monoxide (SiO) | 86.847 GHz |
| Ethynyl radical (C2H) | 87.300 GHz |
| Hydrogen cyanide (HCN) | 88.632 GHz |
| Hydrogen isocyanide (H15NC) | 88.866 GHz |
| Formylium (HCO+) | 89.189 GHz |
| Hydrogen isocyanide (HNC) | 90.664 GHz |
| Cyanoacetylene (HC3N) | 90.979 GHz |
| Methyl cyanide (CH3CN) | 91.98 GHz |
| Carbon monosulphide (13CS) | 92.494 GHz |
| Diazenylium (N2H+) | 93.174 GHz |
| Carbon monosulphide (C34S) | 96.413 GHz |
| Carbon monosulphide (CS) | 97.981 GHz |
| Sulphur monoxide (SO) | 99.300 GHz |
| Cyanoacetylene (HC3N) | 100.076 GHz |
| Methyl acetylene (CH3CCH) | 102.5 GHz |
| Cyanoacetylene (HC3N) | 109.174 GHz |
| Sulphur monoxide (SO) | 109.252 GHz |
| Carbon monoxide (C18O) | 109.782 GHz |
| Deuterated Ammonia (NH2D) | 110.153 GHz |
| Carbon monoxide (13CO) | 110.201 GHz |
| Methyl cyanide (CH3CN) | 110.38 GHz |
| Carbon monoxide (C17O) | 112.359 GHz |
| Cyano radical (CN) | 113.500 GHz |
| Carbon monoxide (CO) | 115.271 GHz |
| Oxygen (O2) | 118.750 GHz |
| Silicon monoxide (SiO) | 127.269 GHz |
| Formaldehyde (H213CO) | 137.450 GHz |
| Carbon monosulphide (13CS) | 138.739 GHz |
| Formaldehyde (H2CO) | 140.840 GHz |
| Deuterated formylium (DCO+) | 144.077 GHz |
| Deuterium cyanide (DCN) | 144.828 GHz |
| Formaldehyde (H2CO) | 145.603 GHz |
| Carbon monosulphide (CS) | 146.969 GHz |
| Methyl cyanide (CH3CN) | 147.17 GHz |
| Nitric oxide (NO) | 150.4 GHz |
| Formaldehyde (H2CO) | 150.498 GHz |
| Methyl acetylene (CH3CCH) | 153.8 GHz |
| Cyanoacetylene (HC3N) | 154.657 GHz |
| Cyanoacetylene (HC3N) | 163.753 GHz |
| Hydrogen sulphide (H2S) | 168.760 GHz |
| Silicon monoxide (SiO) | 173.688 GHz |
| Water vapor (H2O) | 183.310 GHz |
| Carbon monosulphide (CS) | 195.954 GHz |
| Water vapor (H218O) | 203.132 GHz |
| Sulphur monoxide (SO) | 206.176 GHz |
| Sulphur monoxide (SO) | 215.221 GHz |
| Deuterated formylium (DCO+) | 216.113 GHz |
| Silicon monoxide (SiO) | 217.105 GHz |
| Deuterium cyanide (DCN) | 217.239 GHz |
| Formaldehyde (H2CO) | 218.222 GHz |
| Carbon monoxide (C18O) | 219.560 GHz |
| Carbon monoxide (13CO) | 220.399 GHz |
| Methyl cyanide (CH3CN) | 220.7 GHz |
| Sulphur dioxide (SO2) | 221.965 GHz |
| Methyl acetylene (CH3CCH) | 222.1 GHz |
| Carbon monoxide (C17O) | 224.714 GHz |
| Sulphur dioxide (SO2) | 225.154 GHz |
| Deuterated water (HDO) | 225.897 GHz |
| Cyano radical (CN) | 226.600 GHz |
| Cyano radical (CN) | 226.800 GHz |
| Carbon monoxide (CO) | 230.538 GHz |
| Carbon monosulphide (13CS) | 231.221 GHz |
| Carbon monosulphide (C34S) | 241.016 GHz |
| Deuterated water (HDO) | 241.562 GHz |
| Methanol (CH3OH) | 241.700 GHz |
| Methanol (CH3OH) | 241.767 GHz |
| Methanol (CH3OH) | 241.791 GHz |
| Methanol (CH3OH) | 241.842 GHz |
| Carbon monosulphide (CS) | 244.953 GHz |
| Nitric oxide (NO) | 250.6 GHz |
| Sulphur dioxide (SO2) | 251.211 GHz |
| Methyl cyanide (CH3CN) | 257.5 GHz |
| Hydrogen cyanide (H13CN) | 259.012 GHz |
| Formylium (H13CO+) | 260.255 GHz |
| Silicon monoxide (SiO) | 260.518 GHz |
| Hydrogen isocyanide (HN13C) | 261.263 GHz |
| Ethynyl radical (C2H) | 262.000 GHz |
| Sulphur dioxide (SO2) | 262.334 GHz |
| Hydrogen cyanide (HCN) | 265.886 GHz |
| Formylium (HCO+) | 267.557 GHz |
| Hydrogen isocyanide (HNC) | 271.981 GHz |
| Carbon monosulphide (13CS) | 277.455 GHz |
| Diazenylium (N2H+) | 279.511 GHz |
| Carbon monosulphide (C34S) | 289.209 GHz |
| Sodium hydride (NaH) | 289.860 GHz |
| Carbon monosulphide (CS) | 293.912 GHz |
| Hydronium (H3O+) | 307.192 GHz |
| Carbon monosulphide (13CS) | 323.685 GHz |
| Water vapor (H2O) | 325.153 GHz |
| Heavy water (HDO) | 313.750 GHz |
| Carbon monoxide (C18O) | 329.330 GHz |
| Carbon monoxide (13CO) | 330.587 GHz |
| Carbon monosulphide (C34S) | 337.397 GHz |
| Cyano radical (CN) | 340.030 GHz |
| Cyano radical (CN) | 340.250 GHz |
| Carbon monosulphide (CS) | 342.883 GHz |
| Hydrogen cyanide (HC15N) | 344.200 GHz |
| Magnesium hydride (MgH) | 344.305 GHz |
| Hydrogen cyanide (H13CN) | 344.340 GHz |
| Carbon monoxide (CO) | 345.796 GHz |
| Formylium (H13CO+) | 346.999 GHz |
| Silicon monoxide (SiO) | 347.331 GHz |
| Ethynyl radical (C2H) | 349.340 GHz |
| Ethynyl radical (C2H) | 349.390 GHz |
| Hydrogen cyanide (HCN) | 354.484 GHz |
| Formylium (HCO+) | 356.734 GHz |
| Hydrogen isocyanide (HNC) | 362.630 GHz |
| Hydronium (H3O+) | 364.797 GHz |
| Oxygen (O2) | 368.498 GHz |
| Carbon monosulphide (13CS) | 369.908 GHz |
| H2D+ | 372.421 GHz |
| Diazenylium (N2H+) | 372.672 GHz |
| Water vapor (H2O) | 380.197 GHz |
| Carbon monosulphide (C34S) | 385.578 GHz |
| Hydronium (H3O+) | 388.459 GHz |
| Water vapor (H218O) | 390.608 GHz |
| Silicon monoxide (SiO) | 390.728 GHz |
| Carbon monosulphide (CS) | 391.847 GHz |
| Hydronium (H3O+) | 396.272 GHz |
| Carbon monosulphide (13CS) | 416.123 GHz |
| Oxygen (O2) | 424.763 GHz |
| Hydrogen cyanide (H13CN) | 431.660 GHz |
| Carbon monosulphide (C34S) | 433.751 GHz |
| Silicon monoxide (SiO) | 434.120 GHz |
| Carbon monoxide (C18O) | 439.088 GHz |
| Water vapor (H2O) | 439.151 GHz |
| Carbon monoxide (13CO) | 440.765 GHz |
| Carbon monosulphide (CS) | 440.803 GHz |
| Hydrogen cyanide (HCN) | 443.123 GHz |
| Lithium hydride (LiH) | 443.957 GHz |
| Water vapor (H2O) | 448.001 GHz |
| Hyrogen sulphide (H2S) | 452.390 GHz |
| Hydrogen isocyanide (HNC) | 453.270 GHz |
| Carbon monoxide (CO) | 461.041 GHz |
| Carbon monosulphide (13CS) | 462.331 GHz |
| NH2 | 462.400 GHz |
| Heavy water (HDO) | 464.925 GHz |
| NH2 | 469.300 GHz |
| Water vapor (H2O) | 474.689 GHz |
| Silicon monoxide (SiO) | 477.503 GHz |
| Heavy water (HDO) | 479.947 GHz |
| Heavy water (HDO) | 481.780 GHz |
| Carbon monosulphide (C34S) | 481.916 GHz |
| Oxygen (O2) | 487.249 GHz |
| Water vapor (H218O) | 489.054 GHz |
| Carbon monosulphide (CS) | 489.751 GHz |
| Heavy water (HDO) | 490.597 GHz |
| Carbon (CI) | 492.162 GHz |
| Carbon monosulphide (13CS) | 508.528 GHz |
| Heavy water (HDO) | 509.292 GHz |
| Hydrogen cyanide (H13CN) | 517.970 GHz |
| Silicon monoxide (SiO) | 520.878 GHz |
| Carbon monosulphide (C34S) | 530.071 GHz |
| Hydrogen cyanide (HCN) | 531.716 GHz |
| Methylidyne (CH) | 532.700 GHz |
| SiH2 | 536.600 GHz |
| Methylidyne (CH) | 536.800 GHz |
| Carbon monosulphide (CS) | 538.689 GHz |
| Hydrogen isocyanide (HNC) | 543.897 GHz |
| Water vapor (H218O) | 547.676 GHz |
| Carbon monoxide (13CO) | 550.926 GHz |
| Carbon monosulphide (13CS) | 554.715 GHz |
| Water vapor (H2O) | 556.936 GHz |
| Silicon monoxide (SiO) | 564.244 GHz |
| Ammonia (15NH3) | 572.113 GHz |
| Ammonia (NH3) | 572.498 GHz |
| SiH2 | 575.800 GHz |
| Carbon monoxide (CO) | 576.268 GHz |
| Carbon monosulphide (C34S) | 578.216 GHz |
| Sodium Hydride (NaH) | 579.480 GHz |
| Carbon monosulphide (CS) | 587.616 GHz |
| Heavy water (HDO) | 599.927 GHz |
| Carbon monosulphide (13CS) | 600.889 GHz |
| Hydrogen cyanide (H13CN) | 604.268 GHz |
| Silicon monoxide (SiO) | 607.599 GHz |
| Hydrogen cyanide (HCN) | 620.304 GHz |
| Water vapor (H2O) | 620.700 GHz |
| Heavy water (HDO) | 622.483 GHz |
| Silicon hydride (SiH) | 624.900 GHz |
| Hydrogen chloride (HCl) | 625.040 GHz |
| Hydrogen chloride (HCl) | 625.980 GHz |
| Carbon monosulphide (C34S) | 626.349 GHz |
| Silicon hydride (SiH) | 627.700 GHz |
| Hydrogen isocyanide (HNC) | 634.510 GHz |
| Carbon monosulphide (CS) | 636.532 GHz |
| Carbon monosulphide (13CS) | 647.050 GHz |
| H2D+ | 648.337 GHz |
| Silicon monoxide (SiO) | 650.944 GHz |
| Carbon monoxide (13CO) | 661.067 GHz |
| Carbon monosulphide (C34S) | 674.470 GHz |
| Carbon monosulphide (CS) | 685.435 GHz |
| Magnesium hydride (MgH) | 687.100 GHz |
| Magnesium hydride (MgH) | 687.900 GHz |
| Hydrogen cyanide (H13CN) | 690.268 GHz |
| Carbon monoxide (CO) | 691.473 GHz |
| Carbon monosulphide (13CS) | 693.195 GHz |
| Silicon monoxide (SiO) | 694.275 GHz |
| Hydrogen cyanide (HCN) | 708.877 GHz |
| Oxygen (O2) | 715.393 GHz |
| Carbon monosulphide (C34S) | 722.577 GHz |
| Hydrogen isocyanide (HNC) | 725.107 GHz |
| Carbon monosulphide (CS) | 734.324 GHz |
| Silicon monoxide (SiO) | 737.594 GHz |
| Carbon monosulphide (13CS) | 739.324 GHz |
| Water vapor (H218O) | 745.320 GHz |
| Water vapor (H2O) | 752.033 GHz |
| Heavy water (HDO) | 753.411 GHz |
| Carbon monosulphide (C34S) | 770.669 GHz |
| Oxygen (O2) | 773.840 GHz |
| Hydrogen cyanide (H13CN) | 776.819 GHz |
| Silicon monoxide (SiO) | 780.594 GHz |
| Carbon monosulphide (CS) | 783.199 GHz |
| Carbon monosulphide (13CS) | 785.434 GHz |
| Hydrogen cyanide (HCN) | 797.433 GHz |
| Formylium (HCO+) | 802.653 GHz |
| Carbon monoxide (CO) | 806.652 GHz |
| Carbon (CI) | 809.350 GHz |
| Hydrogen isocyanide (HNC) | 815.684 GHz |
| Carbon monosulphide (C34S) | 818.745 GHz |
| Silicon monoxide (SiO) | 824.186 GHz |
| Carbon monosulphide (13CS) | 831.523 GHz |
| Carbon monosulphide (CS) | 832.057 GHz |
| Oxygen (O2) | 834.146 GHz |
| Methylidinium (CH+) | 835.070 GHz |
| Hydrogen cyanide (H13CN) | 863.069 GHz |
| Carbon monosulphide (C34S) | 866.804 GHz |
| Sulpher hydride (SH) | 866.900 GHz |
| Silicon monoxide (SiO) | 867.457 GHz |
| Sulpher hydride (SH) | 875.200 GHz |
| Carbon monosulphide (13CS) | 877.591 GHz |
| Carbon monosulphide (CS) | 880.899 GHz |
| Carbon monoxide (13CO) | 881.273 GHz |
| Hydrogen cyanide (HCN) | 885.977 GHz |
| Lithium hydride (LiH) | 886.500 GHz |
| Formilium (HCO+) | 891.558 GHz |
| Heavy water (HDO) | 893.639 GHz |
| Hydrogen isocyanide (HNC) | 906.239 GHz |
| Silicon monoxide (SiO) | 910.710 GHz |
| Carbon monosulphide (C34S) | 914.844 GHz |
| Water vapor (H2O) | 916.172 GHz |
| Heavy water (HDO) | 919.310 GHz |
| Carbon monoxide (CO) | 921.800 GHz |
| Carbon monosulphide (13CS) | 923.633 GHz |
| Carbon monosulphide (CS) | 929.723 GHz |
| Hydrogen cyanide (H13CN) | 949.299 GHz |
| Silicon monoxide (SiO) | 953.943 GHz |
| H3+ | 955.000 GHz |
| Carbon monosulphide (C34S) | 962.865 GHz |
| Carbon monosulphide (13CS) | 969.649 GHz |
| Water vapor (H2O) | 970.315 GHz |
| Nitrogen hydride (NH) | 974.479 GHz |
| Hydrogen cyanide (HCN) | 974.488 GHz |
| Carbon monosulphide (CS) | 978.529 GHz |
| Formilium (HCO+) | 983.925 GHz |
| Heavy water (HDO) | 984.138 GHz |
| Hydronium (H3O+) | 984.697 GHz |
| Water vapor (H2O) | 987.927 GHz |
| Water vapor (H218O) | 994.634 GHz |
| Heavy water (HDO) | 995.412 GHz |
| Hydrogen isocyanide (HNC) | 996.771 GHz |
| Silicon monoxide (SiO) | 997.155 GHz |