Shaquille O'Neal has put up the 20th most points per game by a center in a season, with 29.3 per game in 1994-95.

which center has the highest 20th highest ppg in a season
Interpreted as:
Which center has the highest 20th highest ppg with a minimum of 57.4 games played per 82 team games in a season?
1961-62Chamberlain1962-63Chamberlain1960-61Chamberlain1959-60Chamberlain1963-64Chamberlain1971-72Abdul-Jabbar1964-65Chamberlain1974-75McAdoo1965-66Chamberlain1970-71Abdul-Jabbar1961-62Bellamy1975-76McAdoo1981-82Malone1973-74McAdoo1972-73Abdul-Jabbar1974-75Abdul-Jabbar1993-94Robinson1999-00O'Neal1993-94O'Neal1994-95O'Neal1969-70Abdul-Jabbar2000-01O'Neal1970-71Hayes1989-90Ewing2020-21Embiid50.444.838.437.636.934.834.734.533.531.731.631.131.130.630.230.029.829.729.329.328.828.728.728.628.5
NAMESEASONTMGPPPGMPGRPGAPGSPGBPGTPGFGMFGAFG%3PM3PA3P%FTMFTAFT%MINPTSREBASTSTLBLKTOVPF+/-
Wilt ChamberlainWilt Chamberlain1961-62PHIPHI8050.448.525.72.420.039.550.610.417.061.33,8824,0292,052192123
Wilt ChamberlainWilt Chamberlain1962-63SFWSFW8044.847.624.33.418.334.652.88.313.959.33,8063,5861,946275136
Wilt ChamberlainWilt Chamberlain1960-61PHIPHI7938.447.827.21.915.831.150.96.713.350.43,7733,0332,149148130
Wilt ChamberlainWilt Chamberlain1959-60PHIPHI7237.646.427.02.314.832.146.18.013.858.23,3382,7071,941168150
Wilt ChamberlainWilt Chamberlain1963-64SFWSFW8036.946.122.35.015.128.752.46.812.753.13,6892,9481,787403182
Kareem Abdul-JabbarKareem Abdul-Jabbar1971-72MILMIL8134.844.216.64.614.324.957.46.29.068.93,5832,8221,346370235
Wilt ChamberlainWilt Chamberlain1964-65TOT7334.745.222.93.414.628.551.05.612.146.43,3012,5341,673250146
Bob McAdooBob McAdoo1974-75BUFBUF8234.543.214.12.21.12.113.426.151.27.89.780.53,5392,8311,15517992174278
Wilt ChamberlainWilt Chamberlain1965-66PHIPHI7933.547.324.65.213.625.254.06.312.451.33,7372,6491,943414171
Kareem Abdul-JabbarKareem Abdul-Jabbar1970-71MILMIL8231.740.116.03.313.022.557.75.78.369.03,2882,5961,311272264
Walt BellamyWalt Bellamy1961-62CHICHI7931.642.319.02.712.323.751.96.910.864.43,3442,4951,500210281
Bob McAdooBob McAdoo1975-76BUFBUF7831.142.712.44.01.22.112.024.648.77.29.476.23,3282,42796531593160298
Moses MaloneMoses Malone1981-82HOUHOU8131.142.014.71.80.91.53.611.722.551.90.00.10.07.810.276.23,3982,5201,18814276125294208
Bob McAdooBob McAdoo1973-74BUFBUF7430.643.015.12.31.23.312.222.354.76.27.879.33,1852,2611,11717088246252
Kareem Abdul-JabbarKareem Abdul-Jabbar1972-73MILMIL7630.242.816.15.012.923.355.44.36.171.33,2542,2921,224379208
Kareem Abdul-JabbarKareem Abdul-Jabbar1974-75MILMIL6530.042.314.04.11.03.312.524.451.35.06.676.32,7471,94991226465212205
David RobinsonDavid Robinson1993-94SASSAS8029.840.510.74.81.73.33.210.520.750.70.10.434.58.711.674.93,2412,383855381139265253228
Shaquille O'NealShaquille O'Neal1999-00LALLAL7929.740.013.63.80.53.02.812.121.157.40.00.00.05.510.452.43,1632,3441,07829936239223255+706
Shaquille O'NealShaquille O'Neal1993-94ORLORL8129.339.813.22.40.92.92.711.819.659.90.00.00.05.810.555.43,2242,3771,07219576231222281
Shaquille O'NealShaquille O'Neal1994-95ORLORL7929.337.011.42.70.92.42.611.820.258.30.00.10.05.810.853.32,9232,31590121473192204258
Kareem Abdul-JabbarKareem Abdul-Jabbar1969-70MILMIL8228.843.114.54.111.422.151.85.99.165.33,5342,3611,190337283
Shaquille O'NealShaquille O'Neal2000-01LALLAL7428.739.512.73.70.62.82.911.019.257.20.00.00.06.713.151.32,9242,12594027747204218256+463
Elvin HayesElvin Hayes1970-71SDRSDR8228.744.316.62.311.627.042.85.58.267.23,6332,3501,362186225
Patrick EwingPatrick Ewing1989-90NYKNYK8228.638.610.92.21.04.03.411.220.455.10.00.025.06.17.977.53,1652,34789318278327278325
Joel EmbiidJoel Embiid2020-21PHIPHI5128.531.110.62.81.01.43.19.017.651.31.13.037.79.210.785.91,5851,4515391455069159123+405