Fig.9

b.) Spectra in POD-coefficents a1 to a4, shwoing for height h/c=2, 0.25 and 0.1

       St_ai       h=2,a1       h=2,a2       h=2,a3       h=2,a4    h=0.25,a1    h=0.25,a2    h=0.25,a3    h=0.25,a4     h=0.1,a1     h=0.1,a2     h=0.1,a3     h=0.1,a4
  0.00000000   0.21291643   0.63252291   0.45873146   0.31520093   0.52403316   0.56229489   0.43077392   0.47537726   0.42823373   0.42546126   0.47046832   0.38805640
  0.04761905   0.26934946   0.65141517   0.50951923   0.30280479   0.53661209   0.57193028   0.45578768   0.49417937   0.47526879   0.47093754   0.51203524   0.43228454
  0.09523810   0.27498340   0.64863135   0.52398972   0.25460600   0.47867935   0.50518270   0.42364134   0.42203098   0.48717289   0.47357483   0.50633828   0.45837945
  0.14285714   0.28003084   0.67821571   0.54134036   0.26279511   0.45744584   0.49308590   0.43512689   0.41314439   0.47660349   0.50514109   0.52143046   0.48296088
  0.19047619   0.37361659   0.84022940   0.65695503   0.46896661   0.50583593   0.51514870   0.58319240   0.46541562   0.52171486   0.57010978   0.63425016   0.46201052
  0.23809524   0.35573978   0.81149301   0.63201307   0.43729577   0.49636822   0.51449417   0.56394837   0.46611329   0.50945886   0.55905879   0.62495428   0.47212789
  0.28571429   0.35052131   0.70492293   0.55874331   0.28102450   0.54094798   0.52852616   0.56009037   0.46589532   0.52887532   0.51718072   0.59159578   0.49124188
  0.33333333   0.25769698   0.58602244   0.43937443   0.27364063   0.50156796   0.49397810   0.47772741   0.45300435   0.48441078   0.46420586   0.51572767   0.52835649
  0.38095238   0.10754137   0.38887831   0.25893343   0.32611756   0.39828053   0.46294585   0.28628990   0.47242564   0.41811481   0.45344594   0.45917066   0.52608360
  0.42857143   0.09933540   0.47417706   0.27771992   0.37350390   0.40390702   0.50713923   0.33322482   0.45656348   0.43058539   0.45070007   0.46534019   0.41017048
  0.47619048   0.16877099   0.48832492   0.39306159   0.45677581   0.44366570   0.55946408   0.38057163   0.48388772   0.44067378   0.48476564   0.49193472   0.40038484
  0.52380952   0.24906622   0.55630779   0.53234295   0.54822073   0.48305662   0.61044016   0.42885513   0.53666291   0.46823340   0.52192242   0.52265190   0.40573811
  0.57142857   0.20380838   0.49254486   0.53857197   0.50876803   0.52837848   0.62328751   0.45771590   0.55616411   0.49808951   0.52898086   0.53194137   0.44004786
  0.61904762   0.19858768   0.44870146   0.54242216   0.48845139   0.58162309   0.56415178   0.42531911   0.50837665   0.50349223   0.49732990   0.52020355   0.47617021
  0.66666667   0.19757884   0.57854093   0.63907251   0.58381663   0.73588590   0.52559246   0.39232978   0.46875886   0.53136054   0.44111371   0.48228697   0.50958708
  0.71428571   0.27116879   0.65671212   0.73927171   0.70469681   1.00000000   0.79837658   0.51105337   0.60707450   0.73846766   0.54453775   0.43303804   0.52363751
  0.76190476   0.25815274   0.58472972   0.66370158   0.63435274   0.99635111   0.80768453   0.51117650   0.61880406   1.00000000   0.81105338   0.52719643   0.48080362
  0.80952381   0.24252513   0.44270750   0.46850956   0.42932830   0.68101290   0.56252399   0.33527269   0.49457002   0.98668413   0.79912714   0.51840616   0.43237767
  0.85714286   0.19723451   0.41097698   0.41390997   0.40578293   0.35971409   0.42519999   0.34475495   0.41991551   0.67259157   0.53097605   0.42088680   0.43723787
  0.90476190   0.23304674   0.45245479   0.41292133   0.47753049   0.30281698   0.39588351   0.35498751   0.39222031   0.39127604   0.40715029   0.40197100   0.41841493
  0.95238095   0.44415336   0.62914938   0.53096863   0.67021100   0.26662245   0.30869706   0.40867510   0.33895928   0.36226085   0.35309195   0.31786765   0.34361025
  1.00000000   0.51836310   0.69050841   0.61686406   0.72943708   0.46136658   0.49689199   0.67945234   0.50447909   0.34005654   0.29319145   0.29172951   0.28109501
  1.04761905   0.41574414   0.53347851   0.53264403   0.55082919   0.62174410   0.66049001   0.84196391   0.67644928   0.31284002   0.30165431   0.31570040   0.23674478
  1.09523810   0.33732788   0.32343405   0.37870071   0.37347774   0.51757984   0.55501838   0.73339165   0.59855721   0.31385857   0.32049903   0.32645353   0.23668036
  1.14285714   0.35638724   0.23107479   0.31431528   0.33436428   0.23486488   0.27786153   0.40311544   0.32104517   0.30073542   0.26366594   0.28067320   0.21717833
  1.19047619   0.43903434   0.25177335   0.31888573   0.37696655   0.14197925   0.17318548   0.27165494   0.14672966   0.26252051   0.20490098   0.20883451   0.15653617
  1.23809524   0.84067519   0.65087375   0.69792961   0.62774544   0.12992820   0.20989636   0.27737523   0.14284651   0.22368850   0.17861060   0.16825863   0.12772762
  1.28571429   1.00000000   0.79913643   0.84003915   0.71012978   0.17590618   0.27553775   0.32237176   0.20742996   0.21999347   0.17974082   0.18036500   0.13122834
  1.33333333   0.85044474   0.65227715   0.69517131   0.54945789   0.22406284   0.34053407   0.36102782   0.25095732   0.20647126   0.21473419   0.19554601   0.15401663
  1.38095238   0.44193589   0.34682764   0.43282660   0.37625705   0.19491724   0.30145075   0.31644213   0.20435641   0.20185606   0.20687925   0.17939879   0.12094240
  1.42857143   0.36864640   0.30336610   0.35878899   0.23323171   0.22816380   0.22201312   0.16125231   0.14489904   0.19626021   0.20597525   0.14859348   0.06200769
  1.47619048   0.35334152   0.27591694   0.31769440   0.24632354   0.32607722   0.31744289   0.20733858   0.19406675   0.21555964   0.18104835   0.10616192   0.02559412
  1.52380952   0.36482500   0.17342394   0.24900519   0.26188354   0.22060550   0.22266435   0.19814030   0.11714798   0.37310211   0.31160318   0.25816316   0.12938646
  1.57142857   0.35543215   0.17984836   0.27337077   0.24831304   0.02650047   0.02438060   0.12971537   0.02256059   0.45944290   0.40559895   0.35011020   0.21468457
  1.61904762   0.33270637   0.20026590   0.24842537   0.32692655   0.03493154   0.02680003   0.10944122   0.01529956   0.31066610   0.26067705   0.20680468   0.09491161
  1.66666667   0.43854429   0.24270967   0.23017760   0.42878571   0.01299383   0.00401195   0.08287913   0.01379911   0.14302661   0.06999357   0.03923058   0.00280633
  1.71428571   0.40943253   0.18603926   0.29195796   0.41089680   0.02135539  -0.02046298   0.11859323  -0.00972803   0.14093178   0.05609177   0.02352424  -0.00686294
  1.76190476   0.29205999   0.05329998   0.22299461   0.29832551   0.00343944  -0.00410686   0.09611306   0.01204562   0.11071228   0.01321212   0.00255829  -0.02155445
  1.80952381   0.21290398  -0.03221310   0.11617445   0.16113067  -0.00295269  -0.05250955   0.00615377  -0.01081703   0.10481729   0.01480054   0.01444044  -0.05107373
  1.85714286   0.20629270   0.02399795   0.14757077   0.14211508  -0.03658591  -0.13083611  -0.06477744  -0.11854891   0.10258229  -0.01108080  -0.00252608  -0.08505781
  1.90476190   0.34076108   0.20420212   0.34505796   0.16834639  -0.03522425  -0.12330489  -0.07215230  -0.16701825   0.09068220  -0.04059141  -0.04394572  -0.08558311
  1.95238095   0.35543447   0.21799137   0.36052354   0.16138092  -0.05663385  -0.15785220  -0.09467240  -0.18821927   0.09152356  -0.06011711  -0.06400189  -0.10315761
  2.00000000   0.15729407   0.03712633   0.10637975   0.09446875  -0.06156886  -0.11973079  -0.08480030  -0.16044635   0.07599166  -0.07775051  -0.06481718  -0.13336585
  2.04761905   0.06691132  -0.03078139   0.02571207   0.09705850  -0.03020707  -0.09392643  -0.04796765  -0.13390389   0.08331374  -0.06618788  -0.07084968  -0.14367766
  2.09523810   0.08820493  -0.06046104  -0.01180258   0.08678915  -0.02845532   0.03805613   0.02176923   0.01360464   0.06965802  -0.03617889  -0.03883959  -0.14680417
  2.14285714   0.07076239  -0.11174168   0.00124349   0.05047822  -0.03563683   0.02949244  -0.02399021   0.02632422   0.07772297  -0.03296879  -0.01378553  -0.16275067
  2.19047619   0.06775456  -0.13127176   0.00628886   0.01263218  -0.03348360   0.01309914  -0.06113754  -0.05100677   0.07039001  -0.01505180   0.00444738  -0.17447495
  2.23809524   0.05263665  -0.09016134  -0.01096336  -0.06231761  -0.02854980  -0.02318505  -0.10990821  -0.11647800   0.05951797  -0.02902289  -0.04785682  -0.17663195
  2.28571429  -0.01964091  -0.11246344  -0.07977965  -0.08227482  -0.07964582  -0.14255707  -0.20155910  -0.20221238   0.06502914  -0.03781502  -0.08299923  -0.15761905
  2.33333333  -0.13186334  -0.12347740  -0.12512464  -0.04185686  -0.09561638  -0.20191027  -0.23884285  -0.18435305   0.12405615   0.10991442   0.02909051  -0.06557306
  2.38095238  -0.14963439  -0.16888485  -0.13155619  -0.08952107  -0.07914922  -0.17691689  -0.19731200  -0.16529059   0.09555597   0.06975512  -0.00149023  -0.08724548
  2.42857143  -0.17124856  -0.17500339  -0.17476816  -0.15160836  -0.09129333  -0.16574484  -0.18821508  -0.16553856   0.04898181  -0.08996486  -0.08937428  -0.16703036
  2.47619048  -0.21860401  -0.17441579  -0.14659894  -0.17150449  -0.08931725  -0.16554378  -0.21122386  -0.16242195   0.04067623  -0.10013167  -0.09821618  -0.14771151
  2.52380952  -0.14769110  -0.11640185  -0.09888727  -0.14103882  -0.08861498  -0.13652922  -0.22448909  -0.14544549   0.04040049  -0.09589981  -0.09311956  -0.16499458
  2.57142857  -0.06659175  -0.09060714  -0.06214043  -0.14068611  -0.07556707  -0.13788093  -0.21278391  -0.12717287   0.03311299  -0.08640384  -0.05255197  -0.17090584
  2.61904762  -0.15813252  -0.18156523  -0.16730131  -0.15205001  -0.05845308  -0.08998289  -0.16914167  -0.06639672   0.03876676  -0.07862684  -0.02240193  -0.15830330
  2.66666667  -0.21441712  -0.23084677  -0.24368430  -0.15484475  -0.02035105  -0.04650116  -0.12325258   0.01120331   0.02999749  -0.06754987  -0.02303018  -0.12747174
  2.71428571  -0.20063988  -0.20082108  -0.23700176  -0.16826987  -0.02619564  -0.06117946  -0.12044693   0.01286594   0.03817523  -0.06014039  -0.01650839  -0.11748743
  2.76190476  -0.21592079  -0.21004877  -0.24945945  -0.21911861  -0.05408318  -0.08286772  -0.15438417  -0.03777561   0.02531807  -0.07463921  -0.02949972  -0.18208925
  2.80952381  -0.20400382  -0.22061960  -0.26652792  -0.25831892  -0.06922458  -0.08469499  -0.15772134  -0.06948513   0.02690958  -0.07501970  -0.03172905  -0.21641133
  2.85714286  -0.20653393  -0.23439858  -0.26181891  -0.25485412  -0.07289640  -0.09437925  -0.18051326  -0.07837540   0.02572218  -0.07240330  -0.03715950  -0.21154780
  2.90476190  -0.23543882  -0.23138851  -0.27686277  -0.23766036  -0.09388333  -0.14773780  -0.23731074  -0.13227691   0.01928405  -0.09311892  -0.06834958  -0.21340830
  2.95238095  -0.26142785  -0.22756343  -0.26044930  -0.24393445  -0.12056826  -0.16535916  -0.26099959  -0.16170163   0.01521793  -0.10106315  -0.07468073  -0.20595231
  3.00000000  -0.27704451  -0.24758513  -0.26030474  -0.25360483  -0.10663535  -0.19860941  -0.26417608  -0.16636679   0.01754493  -0.11354817  -0.08769642  -0.18142860
  3.04761905  -0.29240677  -0.27645332  -0.29367457  -0.26920438  -0.13837149  -0.21905241  -0.29665433  -0.18424327   0.00619992  -0.14602965  -0.11560333  -0.19363127
  3.09523810  -0.31211640  -0.27116269  -0.31579419  -0.25403128  -0.13797308  -0.21847894  -0.29515889  -0.21647040   0.01353180  -0.10448604  -0.13441827  -0.17762843
  3.14285714  -0.30400988  -0.26702460  -0.29829555  -0.26556014  -0.13862562  -0.21805414  -0.31621276  -0.23547187   0.00561295  -0.10645625  -0.11932901  -0.13837476
  3.19047619  -0.29357617  -0.26187839  -0.26531092  -0.26331131  -0.13709752  -0.24187717  -0.30988467  -0.24045464   0.00138480  -0.14466392  -0.13892133  -0.19542440
  3.23809524  -0.28768751  -0.26617533  -0.26068824  -0.26119930  -0.16017533  -0.23746351  -0.31999125  -0.26912702   0.00403592  -0.16420768  -0.15451615  -0.21434796
  3.28571429  -0.30059002  -0.29007143  -0.30135196  -0.27486573  -0.15528900  -0.27845639  -0.34003283  -0.29716181  -0.00254886  -0.17139783  -0.18790334  -0.21000032
  3.33333333  -0.30841557  -0.26772383  -0.33424752  -0.28100352  -0.15474801  -0.29272092  -0.34066276  -0.33045343  -0.00149595  -0.16597828  -0.21550536  -0.21159001
  3.38095238  -0.29831431  -0.27298770  -0.28649790  -0.28768992  -0.15788799  -0.26361885  -0.35663288  -0.31594019  -0.00329274  -0.15378258  -0.20073114  -0.20135723
  3.42857143  -0.31406170  -0.29483933  -0.32246495  -0.28571353  -0.14803920  -0.27757331  -0.33941640  -0.30616183  -0.00411935  -0.17010361  -0.21963717  -0.19888065
  3.47619048  -0.32209824  -0.27369143  -0.32228743  -0.27662266  -0.17315293  -0.27598048  -0.32388748  -0.30734733  -0.00898710  -0.18046632  -0.24138236  -0.21073039
  3.52380952  -0.31620228  -0.28194793  -0.31762116  -0.28335947  -0.14994961  -0.26985688  -0.36192510  -0.32056700  -0.00929304  -0.17744254  -0.22970260  -0.20531426
  3.57142857  -0.34744911  -0.27625904  -0.31688042  -0.28571246  -0.16354106  -0.29363260  -0.34748182  -0.30550514  -0.00946681  -0.16850530  -0.23961167  -0.18604700
  3.61904762  -0.31573631  -0.28033635  -0.31478502  -0.28881809  -0.16516789  -0.26810701  -0.33684508  -0.32102078  -0.00607047  -0.18191345  -0.22118045  -0.17954501
  3.66666667  -0.31007226  -0.27690899  -0.32704458  -0.30327772  -0.16026989  -0.26752420  -0.36394450  -0.30891567  -0.01019755  -0.17062016  -0.22511307  -0.14372239
  3.71428571  -0.30388847  -0.28589895  -0.31125494  -0.30493472  -0.15975410  -0.25818615  -0.33636812  -0.31464283  -0.01579003  -0.17805177  -0.24064292  -0.15965418
  3.76190476  -0.31226125  -0.28074046  -0.33714908  -0.28977191  -0.14998438  -0.23174193  -0.34586491  -0.30005940  -0.00941648  -0.15904294  -0.22093932  -0.16731069
  3.80952381  -0.29685844  -0.27875061  -0.31830374  -0.29801740  -0.15638808  -0.25286406  -0.35355255  -0.28963151  -0.00854109  -0.17651437  -0.21922783  -0.15552712
  3.85714286  -0.27944406  -0.23657445  -0.27473515  -0.29854268  -0.15321366  -0.24616073  -0.34557731  -0.27745359  -0.01302156  -0.14223668  -0.21686385  -0.15607639
  3.90476190  -0.32732663  -0.28311872  -0.30359510  -0.30751115  -0.14765128  -0.24508760  -0.36754289  -0.30651919  -0.00011543  -0.10469420  -0.21896915  -0.12134751
  3.95238095  -0.34599331  -0.29486352  -0.33490626  -0.32805025  -0.17314847  -0.25669233  -0.36927847  -0.30544714   0.00048326  -0.13149657  -0.23729429  -0.15736702
  4.00000000  -0.33509181  -0.23822677  -0.32138028  -0.31421106  -0.13398219  -0.25551898  -0.36123800  -0.32025864  -0.01804985  -0.16087498  -0.23903361  -0.17765366
  4.04761905  -0.34933826  -0.20903930  -0.31860121  -0.31564034  -0.17021675  -0.25979443  -0.33471041  -0.32556990  -0.01035454  -0.16460206  -0.21691160  -0.18076332
  4.09523810  -0.34160668  -0.26152432  -0.33012864  -0.33073948  -0.15371252  -0.28644826  -0.34260659  -0.31697699  -0.01526799  -0.16890867  -0.21651213  -0.17500386
  4.14285714  -0.33430054  -0.31094876  -0.35033446  -0.33771795  -0.16065261  -0.27773359  -0.36452467  -0.33584086  -0.01657481  -0.18179392  -0.25987093  -0.19951759
  4.19047619  -0.34973426  -0.28744223  -0.37187495  -0.33738764  -0.14809945  -0.28405752  -0.35672352  -0.34592032  -0.01938740  -0.19382107  -0.24897408  -0.22649500
  4.23809524  -0.35299403  -0.31700817  -0.34839745  -0.34183058  -0.17044751  -0.26702067  -0.35657232  -0.35498776  -0.02088821  -0.18598394  -0.27750231  -0.22805464
  4.28571429  -0.33714642  -0.32255939  -0.34911389  -0.35971932  -0.16039695  -0.29781775  -0.34746485  -0.33668425  -0.01839315  -0.19009667  -0.28405102  -0.24982009
  4.33333333  -0.36001310  -0.30591198  -0.36316302  -0.32552375  -0.16019019  -0.30539498  -0.34742729  -0.34732606  -0.02257806  -0.19976950  -0.27507769  -0.26038898
  4.38095238  -0.34656288  -0.30570544  -0.34863461  -0.33304107  -0.16593397  -0.31531997  -0.35554110  -0.33992876  -0.01914601  -0.18463518  -0.27348031  -0.27799008
  4.42857143  -0.33915767  -0.29758716  -0.34192598  -0.31907745  -0.17107199  -0.32456195  -0.35355028  -0.33956656  -0.02005208  -0.20512729  -0.28269018  -0.28336401
  4.47619048  -0.36771213  -0.25281628  -0.32715844  -0.33550694  -0.16939383  -0.30536526  -0.33421172  -0.35570850  -0.02190624  -0.19510564  -0.27991548  -0.29436992
  4.52380952  -0.34324888  -0.23299927  -0.29400395  -0.32795237  -0.16631442  -0.32730202  -0.34927936  -0.35707139  -0.01777224  -0.18890239  -0.26857121  -0.28869356
  4.57142857  -0.35418370  -0.19667114  -0.29956700  -0.32744998  -0.15912086  -0.31394095  -0.33354258  -0.34728406  -0.02533548  -0.19914691  -0.25420337  -0.28675749
  4.61904762  -0.34688876  -0.25628711  -0.33402211  -0.31468569  -0.17857811  -0.32302965  -0.36268179  -0.36104213  -0.01731744  -0.19882239  -0.28577940  -0.30099726
  4.66666667  -0.34852573  -0.26245749  -0.35007170  -0.32360223  -0.17008208  -0.31951605  -0.32780977  -0.33786447  -0.02924479  -0.19037846  -0.27760903  -0.31040851
  4.71428571  -0.35602645  -0.20190574  -0.32713309  -0.31590311  -0.17467201  -0.31174286  -0.34398612  -0.35133657  -0.01730716  -0.20227244  -0.26299602  -0.30424425
  4.76190476  -0.43361544  -0.35031544  -0.41383955  -0.42612690  -0.22836234  -0.39766076  -0.41062720  -0.41093931  -0.07777834  -0.25494171  -0.35597973  -0.34773694
