The 3MdB database was dealing with models from Cloudy c10 and c13.
In the 3MdB_17 database released in 2020, the c17.01 version of Cloudy is used, and then the labels of the emission lines changed. See below for the labels of the lines. The number of emission lines and continuum points managed in this new database strongly increased (from 178 to 292). Some NII and OII recombination lines are computed by PyNeb, because not available from Cloudy; these lines have the "PN" code in their description.
In both cases, the structure of the table holding all the emission lines is the same:
+--------+-------------+------+-----+---------+----------------+| Field | Type | Null | Key | Default | Extra |+--------+-------------+------+-----+---------+----------------+| Nl | bigint(20) | NO | PRI | NULL | auto_increment || label | varchar(15) | YES | | NULL | || id | varchar(20) | YES | | NULL | || lambda | double | YES | | NULL | || name | varchar(40) | NO | | NULL | || used | int(2) | YES | | 1 | |+--------+-------------+------+-----+---------+----------------+The 292 emission lines available in the 3MdB_17 are given in the following table. Column A gives the string used in the 3MdB_17 tables, the column B corresponds to the Cloudy command used and the column C describes the line.
BAC__364600A | Bac 3646.00A | Bac 3646.0ACOUT_364600A | cout 3646.00A | cout 3646.0ACREF_364600A | cref 3646.00A | cref 3646.0AH__1_486133A | H 1 4861.33A | H 1 4861.33ACA_B_486133A | Ca B 4861.33A | Ca B 4861.33AH__1_656281A | H 1 6562.81A | H 1 6562.81ACA_B_656281A | Ca B 6562.81A | Ca B 6562.81AH__1_434046A | H 1 4340.46A | H 1 4340.46ACA_B_434046A | Ca B 4340.46A | Ca B 4340.46AH__1_388905A | H 1 3889.05A | H 1 3889.05ACA_B_388905A | Ca B 3889.05A | Ca B 3889.05AH__1_121567A | H 1 1215.67A | H 1 1215.67ACA_B_121567A | Ca B 1215.67A | Ca B 1215.67AH__1_187510M | H 1 1.87510M | H 1 1.87510mCA_B_187510M | Ca B 1.87510M | Ca B 1.87510mH__1_128180M | H 1 1.28180M | H 1 1.28180mCA_B_128180M | Ca B 1.28180M | Ca B 1.28180mH__1_405113M | H 1 4.05113M | H 1 4.05113mCA_B_405113M | Ca B 4.05113M | Ca B 4.05113mH__1_262513M | H 1 2.62513M | H 1 2.62513mCA_B_262513M | Ca B 2.62513M | Ca B 2.62513mH__1_745777M | H 1 7.45777M | H 1 7.45777mCA_B_745777M | Ca B 7.45777M | Ca B 7.45777mH__1_123684M | H 1 12.3684M | H 1 12.3684mCA_B_123684M | Ca B 12.3684M | Ca B 12.3684mH__1_190565M | H 1 19.0565M | H 1 19.0565mCA_B_190565M | Ca B 19.0565M | Ca B 19.0565mH__1_276210M | H 1 276.210M | H 1 276.210mCA_B_276210M | Ca B 276.210M | Ca B 276.210mH__1_518618M | H 1 518.618M | H 1 518.618mCA_B_518618M | Ca B 518.618M | Ca B 518.618mH__1_590935M | H 1 590.935M | H 1 590.935mCA_B_590935M | Ca B 590.935M | Ca B 590.935mHE_1_587564A | He 1 5875.64A | He 1 5875.64ACA_B_587564A | Ca B 5875.64A | Ca B 5875.64AHE_1_728135A | He 1 7281.35A | He 1 7281.35ACA_B_728135A | Ca B 7281.35A | Ca B 7281.35AHE_1_706522A | He 1 7065.22A | He 1 7065.22ACA_B_706522A | Ca B 7065.22A | Ca B 7065.22AHE_1_447149A | He 1 4471.49A | He 1 4471.49ACA_B_447149A | Ca B 4471.49A | Ca B 4471.49AHE_1_667815A | He 1 6678.15A | He 1 6678.15ACA_B_667815A | Ca B 6678.15A | Ca B 6678.15AHE_1_388863A | He 1 3888.63A | He 1 3888.63ACA_B_388863A | Ca B 3888.63A | Ca B 3888.63AHE_1_108303M | He 1 1.08303M | He 1 1.08303mCA_B_108303M | Ca B 1.08303M | He 1B 1.08303mTOTL_108303M | TOTL 1.08303M | He 1 1.08303m+HE_1_205813M | He 1 2.05813M | He 1 2.05813mCA_B_205813M | Ca B 2.05813M | He 1B 2.058133mHE_2_164043A | He 2 1640.43A | He 2 1640.43ACA_B_164043A | Ca B 1640.43A | Ca B 1640.43AHE_2_468564A | He 2 4685.64A | He 2 4685.64ACA_B_468564A | Ca B 4685.64A | Ca B 4685.64AHE_2_101233M | He 2 1.01233M | He 2 1.01233mCA_B_101233M | Ca B 1.01233M | Ca B 1.01233mC__1_872713A | C 1 8727.13A | C 1 8727.13AC__1_985026A | C 1 9850.26A | C 1 9850.26AC_1R_985000A | C 1R 9850.00A | C 1R 9850.00ABLND_232600A | BLND 2326.00A | C 2 2326.0A+BLND_133500A | BLND 1335.00A | C 2 1335.0A+C_2R_133500A | C 2R 1335.00A | C 2R 1335.0AC__2_176100A | C 2 1761.00A | C 2 1761.0ABLND_658000A | BLND 6580.00A | C 2 6580.0A+C_2R_658000A | C 2R 6580.00A | C 2R 6580.0AC__2_426700A | C 2 4267.00A | C 2 4267.0AC__2_157636M | C 2 157.636M | C 2 157.636mC__3_977000A | C 3 977.000A | C 3 977.0AC__3_190668A | C 3 1906.68A | C 3 1906.68AC__3_190873A | C 3 1908.73A | C 3 1908.73ABLND_190900A | Blnd 1909.00A | C 3 1909.0A+C_3R_190900A | C 3R 1909.00A | C 3R 1909.0AC__3_464900A | C 3 4649.00A | C 3 4649.0AC__3_406900A | C 3 4069.00A | C 3 4069.0AC__3_229690A | C 3 2296.90A | C 3 2296.9ABLND_154900A | BLND 1549.00A | C 4 1549.0A+C_4R_154900A | C 4R 1549.00A | C 4R 1549.0AC__4_465900A | C 4 4659.00A | C 4 4659.0AN__1_519790A | N 1 5197.90A | N 1 5197.9AN__1_520026A | N 1 5200.26A | N 1 5200.26ABLND_519900A | Blnd 5199.00A | N 1 5199.0A+N_1R_519900A | N 1R 5199.00A | N 1R 5199.0ABLND_575500A | BLND 5755.00A | N 2 5755.0A+N_2R_575500A | N 2R 5755.00A | N 2R 5755.0AN__2_500500A | N 2 5005.00A | N 2R 5005.0AN__2_654805A | N 2 6548.05A | N 2 6548.05AN__2_658345A | N 2 6583.45A | N 2 6583.45ABLND_214100A | Blnd 2141.00A | N 2 2141.0AN__2_214278A | N 2 2142.78A | N 2 2142.78AN__2_404100A | N 2 4041.00A | N 2 4041.0AN__2_121767M | N 2 121.767M | N 2 121.767mN__2_205244M | N 2 205.244M | N 2 205.244mN_2R_566663A_PN | N 2 205.244M | N 2R 5666.63A PNN_2R_567602A_PN | N 2 205.244M | N 2R 5676.02A PNN_2R_567956A_PN | N 2 205.244M | N 2R 5679.56A PNN_2R_568621A_PN | N 2 205.244M | N 2R 5686.21A PNN_2R_571077A_PN | N 2 205.244M | N 2R 5710.77A PNN_2R_500515A_PN | N 2 205.244M | N 2R 5005.15A PNN_2R_500114A_PN | N 2 205.244M | N 2R 5001.14A PNN_2R_500148A_PN | N 2 205.244M | N 2R 5001.48A PNN__3_573238M | N 3 57.3238M | N 3 57.3238mBLND_175000A | BLND 1750.00A | N 3 1750.0A+N__3_437900A | N 3 4379.00A | N 3 4379.0ABLND_148600A | BLND 1486.00A | N 4 1486.0A+N__4_171855A | N 4 1718.55A | N 4 1718.55AN__5_124280A | N 5 1242.80A | N 5 1242.80AN__5_123882A | N 5 1238.82A | N 5 1238.82AO__1_777300A | O 1 7773.00A | O 1 7773.0AO__1_630030A | O 1 6300.30A | O 1 6300.3AO__1_557734A | O 1 5577.34A | O 1 5577.34AO__1_631679M | O 1 63.1679M | O 1 63.1679mO__1_145495M | O 1 145.495M | O 1 145.495mO__2_372603A | O 2 3726.03A | O 2 3726.03AO__2_372881A | O 2 3728.81A | O 2 3728.81ABLND_732300A | Blnd 7323.00A | O 2 7323.0A+BLND_733200A | Blnd 7332.00A | O 2 7332.0A+O_2R_372600A | O 2R 3726.00A | O 2R 3726.0AO_2R_372900A | O 2R 3729.00A | O 2R 3729.0AO_2R_732300A | O 2R 7323.00A | O 2R 7323.0AO_2R_733200A | O 2R 7332.00A | O 2R 7332.0ABLND_372700A | BLND 3727.00A | O 2 3727.0A+BLND_732500A | BLND 7325.00A | O 2 7325.0A+BLND_247100A | BLND 2471.00A | O 2 2471.0A+O__2_415200A | O 2 4152.00A | O 2 4152.0ABLND_434100A | BLND 4341.00A | O 2 4341.0A+O__2_465100A | O 2 4651.00A | O 2 4651.0AO_2R_465100A | O 2R 4651.00A | O 2R 4651.0AO_2R_463886A_PN | O 2R 4651.00A | O 2R 4638.86A PNO_2R_464181A_PN | O 2R 4651.00A | O 2R 4641.81A PNO_2R_464913A_PN | O 2R 4651.00A | O 2R 4649.13A PNO_2R_465084A_PN | O 2R 4651.00A | O 2R 4650.84A PNO_2R_466163A_PN | O 2R 4651.00A | O 2R 4661.63A PNO_2R_467373A_PN | O 2R 4651.00A | O 2R 4673.73A PNO_2R_467623A_PN | O 2R 4651.00A | O 2R 4676.23A PNO_2R_469635A_PN | O 2R 4651.00A | O 2R 4696.35A PNO_2R_406988A_PN | O 2R 4651.00A | O 2R 4069.88A PNO_2R_407215A_PN | O 2R 4651.00A | O 2R 4072.15A PNO_2R_407586A_PN | O 2R 4651.00A | O 2R 4075.86A PNO_2R_407884A_PN | O 2R 4651.00A | O 2R 4078.84A PNO_2R_408511A_PN | O 2R 4651.00A | O 2R 4085.11A PNO_2R_409293A_PN | O 2R 4651.00A | O 2R 4092.93A PNBLND_436300A | BLND 4363.00A | O 33 4363.0AO_3R_436300A | O 3R 4363.00A | O 3R 4363.0AO__3_495891A | O 3 4958.91A | O 3 4958.91AO__3_500684A | O 3 5006.84A | O 3 5006.84AO__3_518004M | O 3 51.8004M | O 3 51.8004mO__3_883323M | O 3 88.3323M | O 3 88.3323mO__3_166081A | O 3 1660.81A | O 3 1660.81ABLND_166600A | BLND 1666.00A | O 3 1666.0A+BLND_140200A | BLND 1402.00A | O 4 1402.0A+O__4_258832M | O 4 25.8832M | O 4 25.8832mO__4_463200A | O 4 4632.00A | O 4 4632.00ABLND_121800A | BLND 1218.00A | O 5 1218.0A+O__6_103191A | O 6 1031.91A | [O VI] 1032AO__6_103762A | O 6 1037.62A | [O VI] 1038AF__2_478945A | F 2 4789.45A | F 2 4789.45AF__4_399692A | F 4 3996.92A | F 4 3996.92AF__4_405990A | F 4 4059.90A | F 4 4059.9ANE_2_128101M | Ne 2 12.8101M | Ne 2 12.8101mNE_3_386876A | Ne 3 3868.76A | Ne 3 3868.76ANE_3_396747A | Ne 3 3967.47A | Ne 3 3967.47ANE_3_181456A | Ne 3 1814.56A | Ne 3 1814.56ANE_3_401168A | Ne 3 4011.68A | Ne 3 4011.68ANE_3_155509M | Ne 3 15.5509M | Ne 3 15.5509mNE_3_360036M | Ne 3 36.0036M | Ne 3 36.0036mNE_4_160161A | Ne 4 1601.61A | Ne 4 1601.61ANE_4_160145A | Ne 4 1601.45A | Ne 4 1601.45ABLND_242400A | BLND 2424.00A | Ne 4 2424.0A+BLND_472000A | BLND 4720.00A | Ne 4 4720.0A+NE_5_334599A | Ne 5 3345.99A | Ne 5 3345.99ANE_5_342603A | Ne 5 3426.03A | Ne 5 3426.03ANE_5_157476A | Ne 5 1574.76A | Ne 5 1574.76ANE_5_297320A | Ne 5 2973.20A | Ne 5 2973.2ANE_5_242065M | Ne 5 24.2065M | Ne 5 24.2065mNE_5_143228M | Ne 5 14.3228M | Ne 5 14.3228mNE_6_764318M | Ne 6 7.64318M | Ne 6 7.64318mNA_3_731706M | Na 3 7.31706M | Na 3 7.31706mMG_2_279553A | Mg 2 2795.53A | Mg 2 2795.53AMG_2_280271A | Mg 2 2802.71A | Mg 2 2802.71AMG_4_448712M | Mg 4 4.48712M | Mg 4 4.48712mMG_5_560700M | Mg 5 5.60700M | Mg 5 5.60700mMG_5_135464M | Mg 5 13.5464M | Mg 5 13.5464mMG_5_278276A | Mg 5 2782.76A | Mg 5 2782.76AMG_7_550177M | Mg 7 5.50177M | Mg 7 5.50177mAL_2_266915A | Al 2 2669.15A | Al 2 2669.15AAL_2_266035A | Al 2 2660.35A | Al 2 2660.35ABLND_186000A | Blnd 1860.00A | Al 3 1860.0A+SI_2_348046M | Si 2 34.8046M | Si 2 34.8046mBLND_233500A | BLND 2335.00A | Si 2 2335.0A+SI_3_189203A | Si 3 1892.03A | Si 3 1892.03ASI_3_188271A | Si 3 1882.71A | Si 3 1882.71ASI_4_139375A | Si 4 1393.75A | Si 4 1393.75ASI_6_196247M | Si 6 1.96247M | Si 6 1.96247mSI_7_248071M | Si 7 2.48071M | Si 7 2.48071mSI_7_651288M | Si 7 6.51288M | Si 7 6.51288mS__2_406860A | S 2 4068.60A | S 2 4068.6AS__2_407635A | S 2 4076.35A | S 2 4076.35AS__2_673082A | S 2 6730.82A | S 2 6730.82AS__2_671644A | S 2 6716.44A | S 2 6716.44AS__2_102867M | S 2 1.02867M | S 2 1.02867mS__2_103364M | S 2 1.03364M | S 2 1.03364mS__2_103205M | S 2 1.03205M | S 2 1.03205mS__2_103705M | S 2 1.03705M | S 2 1.03705mS__3_631206A | S 3 6312.06A | S 3 6312.06AS__3_953062A | S 3 9530.62A | S 3 9530.62AS__3_906862A | S 3 9068.62A | S 3 9068.62AS__3_187078M | S 3 18.7078M | S 3 18.7078mS__3_334704M | S 3 33.4704M | S 3 33.4704mS__4_105076M | S 4 10.5076M | S 4 10.5076mS__4_139804A | S 4 1398.04A | S 4 1398.04ABLND_140600A | BLND 1406.00A | S 4 1406A+S__5_119914A | S 5 1199.14A | S 5 1199.14AS__5_118828A | S 5 1188.28A | S 5 1188.28ACL_2_857870A | Cl 2 8578.70A | Cl 2 8578.7ACL_2_912360A | Cl 2 9123.60A | Cl 2 9123.6ACL_2_616184A | Cl 2 6161.84A | Cl 2 6161.84ACL_2_143639M | Cl 2 14.3639M | Cl 2 14.3639mCL_2_332721M | Cl 2 33.2721M | Cl 2 33.2721mCL_3_553787A | Cl 3 5537.87A | Cl 3 5537.87ACL_3_551771A | Cl 3 5517.71A | Cl 3 5517.71ACL_3_335317A | Cl 3 3353.17A | Cl 3 3353.17ACL_3_334280A | Cl 3 3342.80A | Cl 3 3342.8ACL_3_850001A | Cl 3 8500.01A | Cl 3 8500.01ACL_3_854796A | Cl 3 8547.96A | Cl 3 8547.96ACL_3_843366A | Cl 3 8433.66A | Cl 3 8433.66ACL_3_848086A | Cl 3 8480.86A | Cl 3 8480.86ABLND_849400A | BLND 8494.00A | Cl 3 8494.0A+CL_4_753054A | Cl 4 7530.54A | Cl 4 7530.54ACL_4_804562A | Cl 4 8045.62A | Cl 4 8045.62ACL_4_203197M | Cl 4 20.3197M | Cl 4 20.3197mCL_4_117629M | Cl 4 11.7629M | Cl 4 11.7629mCL_5_670733M | Cl 5 6.70733M | Cl 5 6.70733mAR_2_698337M | Ar 2 6.98337M | Ar 2 6.98337mAR_3_713579A | Ar 3 7135.79A | Ar 3 7135.79AAR_3_775111A | Ar 3 7751.11A | Ar 3 7751.11AAR_3_519182A | Ar 3 5191.82A | Ar 3 5191.82AAR_3_310918A | Ar 3 3109.18A | Ar 3 3109.18AAR_3_898898M | Ar 3 8.98898M | Ar 3 8.98898mAR_3_218253M | Ar 3 21.8253M | Ar 3 21.8253mAR_4_717070A | Ar 4 7170.70A | Ar 4 7170.70AAR_4_471126A | Ar 4 4711.26A | Ar 4 4711.26AAR_4_474012A | Ar 4 4740.12A | Ar 4 4740.12AAR_4_285366A | Ar 4 2853.66A | Ar 4 2853.66AAR_4_286822A | Ar 4 2868.22A | Ar 4 2868.22AAR_5_700583A | Ar 5 7005.83A | Ar 5 7005.83AAR_5_130985M | Ar 5 13.0985M | Ar 5 13.0985mAR_5_789971M | Ar 5 7.89971M | Ar 5 7.89971mAR_5_643512A | Ar 5 6435.12A | Ar 5 6435.12AAR_6_452800M | Ar 6 4.52800M | Ar 6 4.52800mK__6_560244A | K 6 5602.44A | K 6 5602.44AK__6_622857A | K 6 6228.57A | K 6 6228.57AK__6_882061M | K 6 8.82061M | K 6 8.82061mK__6_557324M | K 6 5.57324M | K 6 5.57324mCA_2_729147A | Ca 2 7291.47A | K 6 7291.47ACA_2_732389A | Ca 2 7323.89A | Ca 2 7323.89ACA_2_866214A | Ca 2 8662.14A | Ca 2 8662.14ACA_2_849802A | Ca 2 8498.02A | Ca 2 8498.02ACA_2_854209A | Ca 2 8542.09A | Ca 2 8542.09AFE_2_259811M | Fe 2 25.9811M | Fe 2 25.9811mFE_2_533881M | Fe 2 5.33881M | Fe 2 5.33881mFE_2_411394M | Fe 2 4.11394M | Fe 2 4.11394mFE_2_353394M | Fe 2 35.3394M | Fe 2 35.3394mFE_2_861695A | Fe 2 8616.95A | Fe 2 8616.95AFE_3_460711A | Fe 3 4607.11A | Fe 3 4607.11AFE_3_466694A | Fe 3 4666.94A | Fe 3 4666.94AFE_3_465801A | Fe 3 4658.01A | Fe 3 4658.01AFE_3_470162A | Fe 3 4701.62A | Fe 3 4701.62AFE_3_473384A | Fe 3 4733.84A | Fe 3 4733.84AFE_3_488112A | Fe 3 4881.12A | Fe 3 4881.12AFE_3_527040A | Fe 3 5270.40A | Fe 3 5270.40AFE_3_475464A | Fe 3 4754.64A | Fe 3 4754.64AFE_4_283574A | Fe 4 2835.74A | Fe 4 2835.74AFE_6_514576A | Fe 6 5145.76A | Fe 6 5145.76AFE_7_572071A | Fe 7 5720.71A | Fe 7 5720.71AFE_7_498855A | Fe 7 4988.55A | Fe 7 4988.55AFE_7_608697A | Fe 7 6086.97A | Fe 7 6086.97AFE10_637454A | Fe10 6374.54A | Fe 10 6374.54AFE11_789187A | Fe11 7891.87A | Fe 11 7891.87AF12__120000M | F12 12.0000M | F12 12.0muF25__250000M | F25 25.0000M | F25 25.0muF60__600000M | F60 60.0000M | F60 60.0muF100_100000M | F100 100.0000M | F100 100.0muMIPS_240000M | MIPS 24.0000M | MIPS 24.0muMIPS_700000M | MIPS 70.0000M | MIPS 70.0muMIPS_160000M | MIPS 160.000M | MIPS 160.0muIRAC_360000M | IRAC 3.60000M | IRAC 3.6muIRAC_450000M | IRAC 4.50000M | IRAC 4.5muIRAC_580000M | IRAC 5.80000M | IRAC 5.8muIRAC_800000M | IRAC 8.00000M | IRAC 8.0muR25_119917C | R2.5 119917.00M | Radio 2.5GHzR49_616860C | R4.9 61686.00M | Radio 4.9GHzR12__249830C | R12 24983.00M | Radio 12GHzR20__149900C | R20 14990.00M | Radio 20GHz