Source:  http://www.cdc.gov/nchs/about/major/nhanes/growthcharts/wtageinf.txt

          Age in
   Sex    Months            L                 M                 S                P3                P5                P10               P25               P50               P75               P90               P95               P97
       1        0    1.815151075       3.530203168       0.152385273       2.355450986       2.52690402        2.773801848       3.150611082       3.530203168       3.879076559       4.17249339        4.34029274        4.446488308
       1      0.5    1.547523128       4.003106424       0.146025021       2.799548641       2.964655655       3.209510017       3.597395573       4.003106424       4.387422565       4.718161283       4.910130108       5.032624982
       1      1.5    1.068795548       4.879525083       0.136478767       3.614688072       3.774848862       4.020561446       4.428872952       4.879525083       5.327327567       5.728152752       5.967101615       6.121929103
       1      2.5    0.695973505       5.672888765       0.129677511       4.34234145        4.503255345       4.754479354       5.183377547       5.672888765       6.175598158       6.638979132       6.921119162       7.106250132
       1      3.5    0.41981509        6.391391982       0.124717085       4.992897896       5.157411653       5.416802856       5.866806254       6.391391982       6.942217106       7.460702368       7.781401145       7.993878049
       1      4.5    0.219866801       7.041836432       0.121040119       5.575169066       5.744751566       6.01371624        6.484969167       7.041836432       7.635323002       8.202193202       8.556813353       8.793443663
       1      5.5    0.077505598       7.630425182       0.1182712         6.096775274       6.272175299       6.551379244       7.043626918       7.630425182       8.262032991       8.871384112       9.255614546       9.51330656
       1      6.5    -0.02190761       8.162951035       0.116153695       6.564430346       6.745992665       7.035656404       7.548345716       8.162951035       8.828786159       9.47546616        9.885435743       10.16135019
       1      7.5    -0.0894409        8.644832479       0.114510349       6.984123338       7.171952393       7.472021438       8.004398775       8.644832479       9.34149038        10.02101374       10.45331433       10.74492376
       1      8.5    -0.1334091        9.081119817       0.113217163       7.361236116       7.555286752       7.865532922       8.416718775       9.081119817       9.805593364       10.51406421       10.96573632       11.27083843
       1      9.5    -0.1600954        9.476500305       0.11218624        7.700624405       7.90075516        8.220839211       8.789881892       9.476500305       10.22612395       10.96017225       11.42867623       11.74538465
       1     10.5    -0.17429685       9.835307701       0.111354536       8.006677447       8.212683538       8.542195484       9.128109523       9.835307701       10.60772151       11.36445045       11.84763282       12.17435729
       1     11.5    -0.1797189        10.16153567       0.110676413       8.283364855       8.494999555       8.833485623       9.43527941        10.16153567       10.9546603        11.73160184       12.2276612        12.56308347
       1     12.5    -0.179254         10.45885399       0.110118635       8.534275028       8.751264252       9.098245709       9.714941801       10.45885399       11.27087147       12.06594792       12.57340193       12.91645043
       1     13.5    -0.17518447       10.7306256        0.109656941       8.762648582       8.984701111       9.339687673       9.970337596       10.7306256        11.55996332       12.37145331       12.88910809       13.23893338
       1     14.5    -0.16932268       10.97992482       0.109273653       8.971407287       9.198222429       9.560722369       10.20441778       10.97992482       11.82524099       12.65174864       13.17867019       13.53462171
       1     15.5    -0.1631139        11.20955529       0.10895596        9.163180317       9.394453831       9.763981751       10.41986276       11.20955529       12.06972515       12.91015164       13.44563963       13.80724431
       1     16.5    -0.15770999       11.4220677        0.108694678       9.340328068       9.575756968       9.951839998       10.61910138       11.4220677        12.29616991       13.14968707       13.6932508        14.0601935
       1     17.5    -0.15402279       11.61977698       0.108483324       9.504964014       9.744250626       10.12643352       10.80432929       11.61977698       12.50708008       13.37310558       13.92444193       14.29654774
       1     18.5    -0.15276214       11.80477902       0.108317416       9.658974787       9.901830339       10.28967982       10.97752662       11.80477902       12.70472779       13.58290165       14.14187481       14.51909298
       1     19.5    -0.15446658       11.9789663        0.108193944       9.804039109       10.05018686       10.44329524       11.14047457       11.9789663        12.89116805       13.78133058       14.34795358       14.73034312
       1     20.5    -0.15952202       12.14404334       0.108110954       9.941644878       10.19082308       10.58881155       11.2947714        12.14404334       13.06825426       13.9704249        14.54484233       14.93255878
       1     21.5    -0.16817926       12.30154103       0.108067236       10.07310549       10.32507004       10.72759156       11.44184727       12.30154103       13.23765258       14.15200982       14.73448194       15.12776542
       1     22.5    -0.1805668        12.45283028       0.108062078       10.19957488       10.45410181       10.86084353       11.58297823       12.45283028       13.40085582       14.3277181        14.91860604       15.31777023
       1     23.5    -0.19670196       12.59913494       0.108095077       10.32206165       10.57894925       10.98963476       11.7192993        12.59913494       13.55919667       14.49900418       15.09875606       15.50417803
       1     24.5    -0.21650121       12.74154396       0.108166005       10.4414422        10.70051298       11.11490406       11.85181666       12.74154396       13.71386029       14.6671577        15.27629562       15.68840631
       1     25.5    -0.23979048       12.88102276       0.108274705       10.55847309       10.81957536       11.23747341       11.98141892       12.88102276       13.86589625       14.83331632       15.45242405       15.87169941
       1     26.5    -0.26631585       13.01842382       0.108421024       10.67380261       10.93681171       11.35805876       12.10888759       13.01842382       14.0162298        14.99847794       15.62818936       16.05514188
       1     27.5    -0.29575496       13.1544966        0.108604769       10.78798156       11.05280067       11.47727994       12.23490671       13.1544966        14.1656725        15.16351231       15.80450043       16.23967114
       1     28.5    -0.32772936       13.28989667       0.108825681       10.90147346       11.168034         11.59566994       12.36007175       13.28989667       14.31493214       15.32917196       15.98213866       16.42608957
       1     29.5    -0.36181746       13.42519408       0.109083423       11.01466395       11.28292555       11.7136834        12.48489772       13.42519408       14.46462206       15.49610261       16.16176896       16.61507584
       1     30.5    -0.39756808       13.56088113       0.109377581       11.12786972       11.3978197        11.8317045        12.60982671       13.56088113       14.61526973       15.66485286       16.34395024       16.80719582
       1     31.5    -0.43452025       13.69737858       0.109707646       11.24134752       11.51299966       11.95005435       12.73523417       13.69737858       14.76732387       15.83588308       16.52914562       17.00291386
       1     32.5    -0.47218875       13.83504622       0.110073084       11.3552982        11.62869248       12.06899744       12.86143776       13.83504622       14.9211657        16.00957526       16.71773017       17.2025984
       1     33.5    -0.51012309       13.97418199       0.110473238       11.46987977       11.74507947       12.18874835       12.98869905       13.97418199       15.07710916       16.18623873       16.91000241       17.40653835
       1     34.5    -0.54788557       14.1150324        0.1109074         11.58520959       11.86229971       12.30947723       13.11723187       14.1150324        15.23541179       16.36611917       17.10619066       17.61494698
       1     35.5    -0.5850701        14.25779618       0.111374787       11.70137143       11.98045644       12.43131521       13.24720657       14.25779618       15.3962791        16.54940494       17.30646132       17.8279717
       1       36    -0.60333785       14.32994444       0.111620652       11.75978387       12.03991048       12.49268178       13.31277633       14.32994444       15.47772447       16.6423691        17.40816491       17.93624653
       2        0    1.509187507       3.39918645        0.142106724       2.414111983       2.54790518        2.747222257       3.06486465        3.39918645        3.717519384       3.992572231       4.152636594       4.254922004
       2      0.5    1.357944315       3.79752846        0.138075916       2.756916984       2.894442278       3.101767067       3.437628263       3.79752846        4.145593668       4.450125603       4.628836382       4.743581789
       2      1.5    1.105537708       4.544776513       0.131733888       3.402293298       3.547610305       3.770157472       4.13899376        4.544776513       4.946765504       5.305632496       5.51916925        5.657379108
       2      2.5    0.902596648       5.230584214       0.126892697       3.997805608       4.150638506       4.387041982       4.784820426       5.230584214       5.680083196       6.08764077        6.332837055       6.492574414
       2      3.5    0.734121414       5.859960798       0.123025182       4.54738333        4.70712251        4.95592631        5.379141034       5.859960798       6.351511983       6.802769825       7.076722522       7.256165568
       2      4.5    0.590235275       6.437587751       0.119840911       5.054538727       5.220487543       5.480295205       5.92588831        6.437587751       6.966523789       7.45711879        7.757233948       7.954730061
       2      5.5    0.464391566       6.967850457       0.117166868       5.522500226       5.693974176       5.963510428       6.428828208       6.967850457       7.53018045        8.056331004       8.380329759       8.59441348
       2      6.5    0.352164071       7.454854109       0.11489384        5.954272494       6.130641295       6.408775097       6.891533095       7.454854109       8.047178246       8.605635546       8.951543685       9.180938407
       2      7.5    0.250497889       7.902436186       0.112949644       6.352668277       6.533372908       6.819122283       7.317373091       7.902436186       8.52187726        9.109878097       9.476008728       9.719620693
       2      8.5    0.15724751        8.314178377       0.11128469        6.720327734       6.904885578       7.197413532       7.709516114       8.314178377       8.958324062       9.573546299       9.958479736       10.2153883
       2      9.5    0.070885725       8.693418423       0.109863709       7.059731719       7.247735767       7.546341788       8.070932165       8.693418423       9.360270982       10.00079194       10.40335475       10.67280092
       2     10.5    -0.00968493       9.043261854       0.10866078        7.373211901       7.564326904       7.868436369       8.404399764       9.043261854       9.7311934         10.3954511        10.81469528       11.0960696
       2     11.5    -0.085258         9.366593571       0.10765621        7.662959063       7.856916169       8.166068895       8.712513432       9.366593571       10.07430572       10.76106284       11.19624565       11.48907597
       2     12.5    -0.15640945       9.666089185       0.106834517       7.93103031        8.127621012       8.441459662       8.997691667       9.666089185       10.39257636       11.10088678       11.5514514        11.85539095
       2     13.5    -0.22355869       9.944226063       0.106183085       8.179355552       8.378425424       8.696684147       9.262185089       9.944226063       10.68874201       11.4179197        11.88347697       12.19829279
       2     14.5    -0.28701346       10.20329397       0.105691242       8.409743555       8.611186014       8.933679535       9.508084539       10.20329397       10.96532105       11.7149113        12.19522253       12.52078451
       2     15.5    -0.34699919       10.4454058        0.105349631       8.62388725        8.827637666       9.154251142       9.737329319       10.4454058        11.2246268        11.99437938       12.48934          12.82561033
       2     16.5    -0.40368918       10.67250698       0.105149754       8.82336957        9.029399482       9.360078736       9.951714686       10.67250698       11.46877937       12.258624         12.76824867       13.11527219
       2     17.5    -0.45721877       10.88638558       0.105083666       9.00966812        9.217979979       9.55272268        10.15289979       10.88638558       11.69971783       12.50974133       13.03414978       13.39204468
       2     18.5    -0.50770077       11.08868151       0.105143752       9.184160166       9.394782429       9.733629905       10.34241498       11.08868151       11.91921144       12.74963667       13.28904061       13.65798985
       2     19.5    -0.55523599       11.28089537       0.105322575       9.348127323       9.561109949       9.904139709       10.52166904       11.28089537       12.1288704        12.98003694       13.53472797       13.91497124
       2     20.5    -0.59992113       11.46439708       0.10561278        9.502760074       9.718170424       10.06548937       10.69195601       11.46439708       12.3301562        13.20250263       13.77284102       14.1646673
       2     21.5    -0.64185418       11.64043402       0.106007025       9.649162144       9.867081272       10.21881956       10.85446195       11.64043402       12.52439148       13.41843913       14.00484351       14.40858419
       2     22.5    -0.6811381        11.81013895       0.106497957       9.788354721       10.00887405       10.3651796        11.01027128       11.81013895       12.71276942       13.62910755       14.23204547       14.64806798
       2     23.5    -0.71788283       11.97453748       0.107078197       9.921280547       10.14449891       10.50553251       11.16037297       11.97453748       12.89636272       13.8356351        14.45561433       14.88431632
       2     24.5    -0.75220617       12.13455528       0.107740346       10.04880788       10.27482891       10.64075987       11.30566645       12.13455528       13.07613212       14.03902484       14.67658549       15.11838945
       2     25.5    -0.78423359       12.2910249        0.108477009       10.17173431       10.40066414       10.77166654       11.44696728       12.2910249        13.25293459       14.24016506       14.89587242       15.35122083
       2     26.5    -0.81409743       12.44469237       0.109280822       10.29079052       10.52273581       10.89898515       11.58501256       12.44469237       13.42753102       14.43983817       15.11427618       15.5836271
       2     27.5    -0.8419355        12.59622335       0.110144488       10.40664383       10.64171007       11.02338047       11.72046615       12.59622335       13.60059358       14.63872906       15.33249457       15.8163176
       2     28.5    -0.86788939       12.74620911       0.111060814       10.51990171       10.7581918        11.14545358       11.8539236        12.74620911       13.77271274       14.83743314       15.55113065       16.0499034
       2     29.5    -0.89210264       12.89517218       0.112022758       10.63111516       10.8727282        11.26574591       11.98591692       12.89517218       13.94440383       15.03646393       15.770701         16.28490586
       2     30.5    -0.91471881       13.04357164       0.113023466       10.74078194       10.98581228       11.38474303       12.11691911       13.04357164       14.11611337       15.23626013       15.99164336       16.52176469
       2     31.5    -0.93587966       13.19180827       0.114056316       10.84934975       11.09788625       11.50287842       12.24734843       13.19180827       14.28822496       15.43719248       16.21432393       16.7608456
       2     32.5    -0.95572344       13.34022934       0.115114952       10.95721927       11.2093447        11.62053697       12.37757256       13.34022934       14.46106492       15.63957012       16.43904429       17.00244749
       2     33.5    -0.97438101       13.48913357       0.116193337       11.06474677       11.32053756       11.73805834       12.50791269       13.48913357       14.634908         15.84364677       16.66604772       17.24680884
       2     34.5    -0.99198075       13.63877446       0.11728575        11.17224778       11.43177357       11.85574032       12.63864672       13.63877446       14.80998135       16.04962601       16.89552564       17.49411514
       2     35.5    -1.00864074       13.78936547       0.118386847       11.27999893       11.54332263       11.9738418        12.77001339       13.78936547       14.98647034       16.25766706       17.12762297       17.74450372
       2       36    -1.01665314       13.86507382       0.118939087       11.33404488       11.59928903       12.03312087       12.83599859       13.86507382       15.07529315       16.36249956       17.24468787       17.87088515
