SIMPLE = T / file does conform to FITS standard BITPIX = 16 / number of bits per data pixel NAXIS = 0 / number of data axes EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H HDUNAME = 'PRIMARY ' LONGSTRN= 'OGIP 1.0' / The HEASARC Long String Convention may be used.COMMENT This FITS file may contain long string keyword values that are COMMENT continued over multiple keywords. The HEASARC convention uses the & COMMENT character at the end of each substring which is then continued COMMENT on the next keyword which has the name CONTINUE. DATE = '2010-10-06T05:43:53' / Date and time of file creation DATE-OBS= '2006-09-06T06:29:22' / Observation start date DATE-END= '2006-09-06T08:02:32' / Observation end date TIMESYS = 'TT ' / Time system MJDREF = 5.0814000000000E+04 / MJD zero point for times TIMEZERO= 0.0000000000000E+00 / Clock correction TIMEUNIT= 's ' / Time unit CLOCKAPP= T / default TSTART = 2.7391136215416E+08 / Observation start time TSTOP = 2.7391695250443E+08 / Observation end time MISSION = 'AXAF ' / Mission TELESCOP= 'CHANDRA ' / Telescope INSTRUME= 'ACIS ' / Instrument OBS_ID = '6824 ' / Observation id OBI_NUM = 0 / Obi number SEQ_NUM = '701242 ' / Sequence number ORIGIN = 'ASC ' / Source of FITS file CREATOR = 'mkwarf - Version CIAO 4.2' / tool that created this output MJD_OBS = 5.3984270395303E+04 / Modified Julian date of observation DS_IDENT= 'ADS/Sa.CXO#obs/06824' / dataset identifier CHECKSUM= '12Fh12Ch12Ch12Ch' / HDU checksum updated 2010-10-06T05:43:53 DATASUM = ' ' / data unit checksum updated 2010-10-06T05:43:50 END XTENSION= 'BINTABLE' / binary table extension BITPIX = 8 / 8-bit bytes NAXIS = 2 / 2-dimensional binary table NAXIS1 = 12 / width of table in bytes NAXIS2 = 1070 / number of rows in table PCOUNT = 0 / size of special data area GCOUNT = 1 / one data group (required keyword) TFIELDS = 3 / number of fields in each row EXTNAME = 'SPECRESP' / name of this binary table extension HDUNAME = 'SPECRESP' / ASCDM block name TTYPE1 = 'ENERG_LO' / Min Energy TFORM1 = '1E ' / format of field TUNIT1 = 'keV ' TTYPE2 = 'ENERG_HI' / Max Energy TFORM2 = '1E ' / format of field TUNIT2 = 'keV ' TTYPE3 = 'SPECRESP' / Effective Area TFORM3 = '1E ' / format of field TUNIT3 = 'cm**2 ' EQUINOX = 2.0000000000000E+03 / default LONGSTRN= 'OGIP 1.0' / The HEASARC Long String Convention may be used.COMMENT This FITS file may contain long string keyword values that are COMMENT continued over multiple keywords. The HEASARC convention uses the & COMMENT character at the end of each substring which is then continued COMMENT on the next keyword which has the name CONTINUE. DATE = '2010-10-06T05:43:53' / Date and time of file creation DATE-OBS= '2006-09-06T06:29:22' / Observation start date OBS_MODE= 'POINTING' / Observation mode DATE-END= '2006-09-06T08:02:32' / Observation end date TIMESYS = 'TT ' / Time system MJDREF = 5.0814000000000E+04 / MJD zero point for times TIMEZERO= 0.0000000000000E+00 / Clock correction TIMEUNIT= 's ' / Time unit BTIMNULL= 2.6928586288689E+08 / Basic Time offset (s) DATACLAS= 'OBSERVED' / default RADECSYS= 'ICRS ' / default BTIMRATE= 2.5625001204763E-01 / Basic Time clock rate (s / VCDUcount) BTIMDRFT= -2.0345838147041E-18 / Basic Time clock drift (s / VCDUcount^2) BTIMCORR= 0.0000000000000E+00 / Correction applied to Basic Time rate (s) TIMEREF = 'LOCAL ' / Time reference (barycenter/local) TASSIGN = 'SATELLITE' / Time assigned by clock CLOCKAPP= T / default SIM_X = -6.8282252473119E-01 / SIM focus pos (mm) SIM_Y = 0.0000000000000E+00 / SIM orthogonal axis pos (mm) SIM_Z = -1.9014258036517E+02 / SIM translation stage pos (mm) FOC_LEN = 1.0070000000000E+04 / HRMA focal length (mm) TIERRELA= 1.0000000000000E-09 / default TIERABSO= 5.0000000000000E-05 / default TIMVERSN= 'ASC-FITS-2' / Timing system definition TSTART = 2.7391136215416E+08 / Observation start time GRATING = 'NONE ' / Grating DETNAM = 'ACIS-235678' / Detector RA_PNT = 1.2092735209962E+02 / Pointing RA DEC_PNT = 3.0382414044777E+01 / Pointing Dec ROLL_PNT= 6.9082852593397E+01 / Pointing Roll RA_TARG = 1.2092500000000E+02 / Observer's specified target RA DEC_TARG= 3.0381833000000E+01 / Observer's specified target Dec DEFOCUS = 1.4449365687057E-03 / SIM defocus (mm) RA_NOM = 1.2092735209962E+02 / Nominal RA DEC_NOM = 3.0382414044777E+01 / Nominal Dec ROLL_NOM= 6.9082852593397E+01 / Nominal Roll TSTOP = 2.7391695250443E+08 / Observation end time STARTMJF= 9922 / Major frame ctr value at start of data STARTMNF= 75 / Start minor frame ctr at start of data STARTOBT= 0.0000000000000E+00 / On-Board MET close to STARTMJF and STARTMNF STOPMJF = 10112 / Major frame ctr value at stop of data STOPMNF = 126 / Stop minor frame ctr at end of data TIMEPIXR= 5.0000000000000E-01 / default TIMEDEL = 1.8410400000000E+00 / timedel Lev1 (in seconds) CTI_APP = 'PPPPPBPBPP' CTI_CORR= T MISSION = 'AXAF ' / Mission TELESCOP= 'CHANDRA ' / Telescope INSTRUME= 'ACIS ' / Instrument READMODE= 'TIMED ' / Read mode DATAMODE= 'FAINT ' / Data mode FLSHTIME= 0.0000000000000E+00 / Inferred duration of each flush. (s) CYCLE = 'P ' / events from which exps? Prim/Second/Both OBSERVER= 'Professor Gordon Garmire' / Principal investigator OBJECT = 'SDSS J0803+3022' / Source name OBS_ID = '6824 ' / Observation id OBI_NUM = 0 / Obi number SEQ_NUM = '701242 ' / Sequence number ONTIME = 4.1039541955590E+03 / [s] Sum of GTIs LIVETIME= 4.0124698822439E+03 / [s] Livetime EXPOSURE= 4.0124698822439E+03 / [s] Exposure time DTCOR = 9.7770825185765E-01 / Dead time correction ASPTYPE = 'KALMAN ' FP_TEMP = 1.5344601440000E+02 / [K] Focal Plane Temperature ORIGIN = 'ASC ' / Source of FITS file CREATOR = 'mkwarf - Version CIAO 4.2' / tool that created this output ASCDSVER= 'CIAO 4.2' / ASCDS version number MJD_OBS = 5.3984270395303E+04 / Modified Julian date of observation DS_IDENT= 'ADS/Sa.CXO#obs/06824' / dataset identifier REVISION= 1 / Processing version of data CHECKSUM= '3bDdAZCd3bCdAZCd' / HDU checksum updated 2010-10-06T05:43:53 DATASUM = '2822193120' / data unit checksum updated 2010-10-06T05:43:53 RAND_SKY= 0.0000000000000E+00 RAND_PI = 0.0000000000000E+00 TITLE = 'Chandra ACIS Snapshot Observations of the Most Luminous Quasars fro&'CONTINUE 'm the Sloan Digital Sky Survey' / Proposal title HDUCLASS= 'OGIP ' HDUCLAS1= 'RESPONSE' HDUCLAS2= 'SPECRESP' HDUVERS = '1.1.0 ' / HDU version HDUVERS1= '1.0.0 ' / HDU version HDUVERS2= '1.1.0 ' / HDU version CHANTYPE= 'PI ' / Channel Type DETCHANS= 1070 / Number of detector channels ARFVERSN= '1992a ' / RMF version number CONTENT = 'SPECRESP' THRSHLD = 0.0000000000000E+00 / FEF contrib percentage cutoff HISTNUM = 71 HISTORY TOOL :mkwarf 2010-10-06T05:43:53 ASC00001HISTORY PARM :infile=../../acisf06824/products/spectra/fullrun_ccd6_acASC00002HISTORY CONT :isf06824_pi14-548_pass1_cl_src1.pi[WMAP] ASC00003HISTORY PARM :outfile=../../acisf06824/products/spectra/fullrun_ccd6_aASC00004HISTORY CONT :cisf06824_pi14-548_pass1_cl_src1.warf ASC00005HISTORY PARM :weightfile=../../acisf06824/products/spectra/fullrun_ccdASC00006HISTORY CONT :6_acisf06824_pi14-548_pass1_cl_src1.wfef ASC00007HISTORY PARM :spectrumfile= ASC00008HISTORY PARM :egridspec=0.3:11.0:0.01 ASC00009HISTORY PARM :pbkfile=../../acisf06824/data/aux/acisf273911476N001_pbkASC00010HISTORY CONT :0.fits.gz ASC00011HISTORY PARM :threshold=0 ASC00012HISTORY PARM :feffile=CALDB ASC00013HISTORY PARM :mskfile= ASC00014HISTORY PARM :asolfile= ASC00015HISTORY PARM :mirror=HRMA ASC00016HISTORY PARM :detsubsysmod= ASC00017HISTORY PARM :dafile=CALDB ASC00018HISTORY PARM :ardlibpar=ardlib ASC00019HISTORY PARM :geompar=geom ASC00020HISTORY PARM :clobber=yes ASC00021HISTORY PARM :verbose=0 ASC00022FEFFILE = '/opt/ciao-4.2/CALDB/data/chandra/acis/fef_pha/acisD2000-01-29fef_ph&'CONTINUE 'a_ctiN0004.fits' / FITS Embedded function file HISTORY PARM :ARDLIB Version: 0.8.4 ASC00023HISTORY PARM :File used for CALDB info: ../../acisf06824/products/specASC00024HISTORY CONT :tra/fullrun_ccd6_acisf06824_pi14-548_pass1_cl_src1.pi[WMASC00025HISTORY CONT :AP] ASC00026HISTORY PARM :Parameter file: /home/xassist/cxcds_param4/ardlib.par ASC00027HISTORY PARM :Vignetting File: /opt/ciao-4.2/CALDB/data/chandra/defaulASC00028HISTORY CONT :t/vignet/hrmaD1996-12-20vignetN0003.fits[1] ASC00029HISTORY PARM :Onaxis Area File: /opt/ciao-4.2/CALDB/data/chandra/defauASC00030HISTORY CONT :lt/axeffa/hrmaD1996-12-20axeffaN0008.fits[1] ASC00031HISTORY PARM :ACIS QE File: /opt/ciao-4.2/CALDB/data/chandra/acis/qe/aASC00032HISTORY CONT :cisD1997-04-17qeN0006.fits[7] ASC00033HISTORY PARM :ACIS Uniformity File: /opt/ciao-4.2/CALDB/data/chandra/aASC00034HISTORY CONT :cis/qeu/acisD2000-01-29qeuN0006.fits[7] ASC00035HISTORY PARM :ACIS Contamination File: /opt/ciao-4.2/CALDB/data/chandrASC00036HISTORY CONT :a/acis/contam/acisD1999-08-13contamN0005.fits[7] ASC00037HISTORY PARM :ACIS 6 Badpix File: /opt/ciao-4.2/CALDB/data/chandra/aciASC00038HISTORY CONT :s/badpix/acisD2000-11-28badpixN0003.fits[7] ASC00039HISTORY PARM :File used for CALDB info: ../../acisf06824/products/specASC00040HISTORY CONT :tra/fullrun_ccd6_acisf06824_pi14-548_pass1_cl_src1.pi[WMASC00041HISTORY CONT :AP] ASC00042HISTORY PARM :File used for CALDB info: ../../acisf06824/products/specASC00043HISTORY CONT :tra/fullrun_ccd6_acisf06824_pi14-548_pass1_cl_src1.pi[WMASC00044HISTORY CONT :AP] ASC00045HISTORY PARM :PIXLIB Version: 4.0.0 ASC00046HISTORY PARM :****** PIXLIB Parameter File ***** ASC00047HISTORY PARM :/opt/ciao-4.2/param/geom.par: ASC00048HISTORY PARM :instruments = /opt/ciao-4.2/CALDB/data/chandra/default/ASC00049HISTORY CONT :geom/telD1999-07-23geomN0005.fits(CALDB) ASC00050HISTORY PARM :aimpoints = /opt/ciao-4.2/CALDB/data/chandra/default/ASC00051HISTORY CONT :aimpts/telD1999-07-23aimptsN0002.fits(CALDB) ASC00052HISTORY PARM :tdet = /opt/ciao-4.2/CALDB/data/chandra/default/ASC00053HISTORY CONT :tdet/telD1999-07-23tdetN0001.fits(CALDB) ASC00054HISTORY PARM :sky = /opt/ciao-4.2/CALDB/data/chandra/default/ASC00055HISTORY CONT :sky/telD1999-07-23skyN0001.fits(CALDB) ASC00056HISTORY PARM :shell = /opt/ciao-4.2/CALDB/data/chandra/default/ASC00057HISTORY CONT :sgeom/telD1999-07-23sgeomN0001.fits(CALDB) ASC00058HISTORY PARM :obsfile = nowT00:00:00() ASC00059HISTORY PARM :****** PIXLIB System Configuration ****** ASC00060HISTORY PARM :Telescope = Chandra ASC00061HISTORY PARM :Focal Length (mm) = 10070.000 ASC00062HISTORY PARM :Detector = ACIS ASC00063HISTORY PARM :Focal Plane Sys. = FP-1.1 ASC00064HISTORY PARM :Tiled Detector Plane Sys. = ACIS-2.2 ASC00065HISTORY PARM :SIM Offset (mm) = (0.684 0.75 236.552) ASC00066HISTORY PARM :Aim Point(NONE) (mm) = (-0.682823 0 -190.143) ASC00067HISTORY PARM :Grating Arm = HEG ASC00068HISTORY PARM :Grating Order = 1 ASC00069HISTORY PARM :Dispersion Plane Sys. = ASC-GDP-1.1 ASC00070HISTORY PARM :Rowland Circle (mm) = 8632.48 ASC00071END >>R=>R> >Q> >?J">>{?>{>33?#>33>Q@ j>Q>p@NO>p>\@Cb>\>Ǯ@~>Ǯ>@>>@>> =A &> =>(A5>(>GAf>G>ffAO>ff>AT>>Ap>>A|>>HB#>H?BL??\B)?\?BB*(??BZF?? =qB%? =q? Aؓ? ?\)B ?\)?Bv??zB1`?z? =BJ? =?B^??(BoѮ?(?RBjB?R?!GB H?!G?# B?# ?&ffB\?&ff?(B:?(?+B?+?.{B̊?.{?0B#?0?333Bj?333?5BUf?5?8QCTP?8Q?:HCkG?:H?=pCX?=p?@C?@?B\C_?B\?EC(T?E?GC1Z?G?J=qC:V?J=q?LCC\?L?O\)CL?O\)?QCT?Q?TzC]g?Tz?W =Cf?W =?YCow?Y?\(Cx?\(?^RCD?^R?aGCj?aG?c CZ?c ?fffC?fff?hCЉ?h?kC?k?n{Cep?n{?pC8?p?s33C'o?s33?uC?u?xQCr?xQ?zHC?zH?}pC:?}p?C??GC?G?\C(J?\? C? ?CCQ??ffCe?ff?C-^??C]p??=qCkz?=q?Co??Cc??{Cs ?{?\)Cک?\)?Cݜ??C[q??33C?33?zC?z?C膾?? =C*? =?QC?Q?C??HCO?H?(C~?(?pCK?p?RCX?R?C+??GC!?G?\C?\? D ? ?D??ffDsJ?ff?DO??D0^??=qD?=q?D??D??{DX?{?\)Dl?\)?D G??D ??33D ۔?33?zD 3?z?D ??? =D ? =?QD b?Q?DK??HD?H?(D ?(?pD.?˅?D$??{DY?{?\)D.?\)?УD?У?D0??33D?33?zDp?z?D H?? =D ? =?QD )?Q?ٙD ?ٙ?HD <'?H?(D 4?(?pD R?p?޸RD ?޸R?D ֐??GD )?G?\D &?\? D -? ?D 6??ffD ?ff?D+??Dzt??=qDs?=q?D1 ??C|??{C1?{?\)C=?\)?C~??Cъ??33C?33?zCƬ?z?C?? =CQ? =?QC\|?Q?C:X??HCV?H?(C?(?pC ?p?RCK ?R@CL@@Cӌ@@GC@G@CM@@\CJ,@\@33C5-@33@ Cn@ @zC!D@z@C@@Cw@@ffC~^@ff@ =Cr@ =@C@@QCwh@Q@Cm@@ CfT@ @ =qCZ#h@ =q@ HC_m@ H@ Ch@ @ (CjX@ (@ Cp@ @ pCu@ p@{C~8@{@RCz@R@\)C|)@\)@C@@C@@GC@G@C0@@\C@\@33Cj`@33@ C@ @zC@z@CM@@C2@@ffC\@ff@ =CN@ =@C*@@QC|@Q@CB@@C _@@=qCI@=q@HC3@H@Cb'@@(C#@(@C8@@pC{@p@{Cx@{@RCCQ@R@\)C @\)@ C@@ @ C˔@ @!GC,@!G@!C<@!@"\C@"\@#33CIo@#33@# Cw@# @$zC2@$z@%CЙ@%@%C(@%@&ffC>@&ff@' =CP@' =@'CPj@'@(QC@(Q@(C@(@)CM@)@*=qC@*=q@*HC\@*H@+C@+@,(C@,(@,Cʴ@,@-pC?"@-p@.{C@.{@.RCq[@.R@/\)C+@/\)@0C@0@0C@0@1GC3@1G@1C@1@2\C!@2\@333C=@333@3 Cm@3 @4zC@4z@5Ct@5@5C@5@6ffCF@6ff@7 =Co@7 =@7C8@7@8QC@8Q@8C^@8@9CD@9@:=qCp@:=q@:HC6@:H@;Cq@;@<(CP@<(@{C?@>{@>RC@>R@?\)C@?\)@@Cy@@@@C@@@AGCjX@AG@ACk@A@B\CCT@B\@C33Cr@C33@C C@C @DzCG@Dz@EC@E@ECɖ@E@FffC@Fff@G =Cm@G =@GC@G@HQC@HQ@HC,l@H@IC&$@I@J=qC@J=q@JHC3@JH@KC@K@L(C$T@L(@LC*q@L@MpC@Mp@N{C~N@N{@NRCq@NR@O\)Cd@O\)@PC5@P@PCI@P@QGCs@QG@QC@Q@R\CR@R\@S33CJ@S33@S C@S @TzC@Tz@UC@U@UCLx@U@VffC@Vff@W =C@W =@WC~@W@XQC\@XQ@XC1@X@YCc@Y@Z=qC@Z=q@ZHC @ZH@[CW@[@\(Cu@\(@\C|@\@]pC%@]p@^{C@^{@^RC;@^R@_\)C} @_\)@`Cj@`@`C0@`@aGC:@aG@aCm@a@b\C@b\@c33C@c33@c Cְ@c @dzCD@dz@eC%@e@eC>@e@fffCVD@fff@g =Cwv@g =@gC@g@hQC@hQ@hC@h@iC@i@j=qC0@j=q@jHC(@jH@kC<@k@l(C_d@l(@lC@l@mpC@mp@n{C@n{@nRC߈@nR@o\)CH@o\)@pC@p@pCh@p@qGC@qG@qC,@q@r\CB@r\@s33CY(@s33@s ChB@s @tzCpE@tz@uCxB@u@uC)@u@vffC@vff@w =C@w =@wC@w@xQCŬ@xQ@xCɍ@x@yCj@y@z=qC͐@z=q@zHC@zH@{C`@{@|(CM@|(@|C8@|@}pCp@}p@~{C.@~{@~RCIz@~R@\)C^@\)@Ct,@@QCN@Q@C:@@C@@GC6@G@CP@@C@@=qC@=q@\C@\@HCt@H@33Cd@33@CW@@ CM@ @(CB>@(@zC*@z@C@@C@@pC@p@C@@{C<@{@ffC@ff@RC@R@ =C@ =@\)Cf@\)@CJ@@C/@@QC)@Q@C@@C@@GC @G@CjN@@C=@@@=qC@=q@\C@\@HC@H@33C{@33@C{]@@ C>@ @(C@(@zC@z@C@@Cd@@pCP@p@C@@{C@{@ffC,@ff@RC@R@ =C?@ =@\)Cx@\)@C˘@@C@@QCb@Q@C&f@@C%@@GC@G@Cu6@@C.@@=qC @=q@\C:@\@HC&@=q@ʏ\C=@ʏ\@HC<>@H@33C;9@33@˅C:G@˅@ C9r@ @(C8J@(@zC71W@z@C6@@C5@@pC4@p@C3@@{C1@{@ffC00@ff@θRC/@θR@ =C.@ =@\)C-{@\)@ϮC,O@Ϯ@C+ @@QC*(@Q@УC(@У@C'@@GC&@G@љC%@љ@C$^I@@=qC#Gf@=q@ҏ\C"1^@ҏ\@HC! ]@H@33CF@33@ӅCD@Ӆ@ CO@ @(C'@(@zC@z@Cf$@@CR@@pCFw@p@C;@@{C2@{@ffC^@ff@ָRCו@ָR@ =C@ =@\)C@\)@׮C@׮@C@@QCw@Q@أC p|@أ@C j*@@GC J#@G@ٙC *@ٙ@C d@@=qCn@=q@ڏ\Cl@ڏ\@HC@H@33C@33@ۅCۇ@ۅ@ Cr@ @(C9@(@zC~@z@B+N@@B @@pB@p@B @@{B$@{@ffB*@ff@޸RB7@޸R@ =BL@ =@\)Ba@\)@߮B$@߮@B@@QBB@Q@B@@B@@GB@G@ᙚB@ᙚ@B@@=qB@=q@\B"@\@HBA@H@33Bbl@33@Bօ@@ BԬ3@ @(B@(@zB@z@B"@@Bg@@pBc@p@B*@@{BJ@{@ffBk@ff@RBĺ@R@ =B9b@ =@\)B&@\)@B"@@BX@@QB@Q@B"d@@Bh@@GB@@G@陚B(@陚@B|@@=qBz@=q@\Bh@\@HB֔@H@33BE@33@B@@ Bn@ @(BR@(@zB N@z@B@@B@@pB@p@Br@@{BF@{@ffB\@ff@RBB@R@ =B@ =@\)B,@\)@B@@BPb@@QB,@Q@B@@B}@@GB0@G@B@@BX@@=qB@=q@\B:@\@HB@H@33B@33@BJ@@ B&.@ @(B@(@zB6@z@B@@B7@@pB@p@Bq@@{BR@{@ffB3@ff@RB~7@R@ =B|!@ =@\)By@\)@Bw@@BuI@@QBs@Q@Bqw@@Bo@@GBm@G@Bk@@BiD@@=qBg@=q@\Bf@\@HBdB@H@33Bbn @33@B`f@@ B^@ @(B\@(@zB[#@z@BYH@@BW9@@pBV'@p@BTv@@{BR@{@ffBQ1@ff@RBO@R@ =BN@ =@\)BL"@\)@BJ@ABI;AA(BGA(AQBF7AQAzBDVAzABCL(AABAhAAB@yAAB?6BAAGB=AGApBAffA\AOA\ARAځ7ARAHAصAHA =A,tA =A33AդA33A\)A A\)AAfAAAPAA AA AA AA(APA(AQAɐRAQAzAҕAzAAIAAAAAAEAAAAAGA`LAGApAApAA AAASAAA"AA{A#A{A=qAdA=qAffA;AffA\ANA\ARA*ARAHAA,A,?yA,A,?rA,A-?kA-A-G?e/A-GA-p?^A-pA-?XA-A-?RA-A-?LA-A.{?GA.{A.=q?AFA.=qA.ff?<.RA.ffA.\?6A.\A.R?1aA.RA.H?,A.HA/ =?'MA/ =A/33?# A/33A/\)?0 A/\)A/?GA/A/?dA/A/ ?A/ A0?