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Table A.1

Chandra HRC-I observations used in this study.

ObsID Exposure[s]a RA(J2000) [deg] Dec(J2000) [deg] Roll angle [deg] MJDb UTc

00267 1268 10.68195 41.26369 264.83 51 512.77 1999-11-30.77
00268 5177 10.68383 41.26435 282.14 51 535.10 1999-12-23.10
00269 1204 10.68627 41.26340 298.54 51 562.91 2000-01-19.91
00271 2463 10.68926 41.26492 331.70 51 611.76 2000-03-08.76
00272 1202 10.68767 41.27255 82.55 51 690.70 2000-05-26.70
00273 1190 10.68734 41.27320 101.67 51 716.20 2000-06-21.20
00275 1188 10.68291 41.27314 134.00 51 774.43 2000-08-18.43
00276 1182 10.68046 41.27222 152.42 51 798.86 2000-09-11.86
00277 1187 10.67952 41.26924 192.16 51 829.18 2000-10-12.18
00278 1182 10.68094 41.26537 250.96 51 865.19 2000-11-17.19
01570 1183 10.68592 41.27310 94.69 52 070.93 2001-06-10.93
01912 46731 10.67112 41.26732 226.83 52 213.99 2001-10-31.99
02904 1181 10.68094 41.26564 253.90 52 232.88 2001-11-19.88
02905 1094 10.68620 41.26497 296.74 52 290.20 2002-01-16.20
02906 1187 10.68861 41.27227 88.37 52 427.90 2002-06-02.90
05925 46288 10.68295 41.26512 270.75 53 345.76 2004-12-06.76
06177 20037 10.68427 41.26494 285.27 53 366.31 2004-12-27.31
05926 28265 10.68433 41.26482 285.63 53 366.84 2004-12-27.84
06202 18045 10.68601 41.26498 303.50 53 398.06 2005-01-28.06
05927 26999 10.68605 41.26490 303.50 53 398.83 2005-01-28.83
05928 44855 10.68742 41.26528 319.07 53 422.68 2005-02-21.68
07283 19941 10.68668 41.27304 90.26 53 891.29 2006-06-05.29
07284 20002 10.67974 41.27133 173.77 54 008.89 2006-09-30.89
07285 18516 10.68043 41.26645 245.26 54 052.30 2006-11-13.30
07286 18707 10.68829 41.26613 333.63 54 170.61 2007-03-11.61
08526 19944 10.67992 41.26685 236.71 54 411.64 2007-11-07.64
08527 19980 10.68098 41.26611 250.73 54 421.76 2007-11-17.76
08528 19975 10.68183 41.26549 262.91 54 432.79 2007-11-28.79
08529 18922 10.68262 41.26536 270.77 54 441.57 2007-12-07.57
08530 19866 10.68330 41.26507 278.33 54 451.49 2007-12-17.49
09825 20212 10.67993 41.26690 234.91 54 778.34 2008-11-08.34
09826 19918 10.68095 41.26603 250.89 54 787.14 2008-11-17.14
09827 19962 10.68197 41.26556 263.10 54 798.24 2008-11-28.24
09828 19967 10.68257 41.26534 271.22 54 807.41 2008-12-07.41
09829 10075 10.68351 41.26532 279.41 54 818.02 2008-12-18.02
10838 10041 10.68331 41.26521 279.41 54 818.49 2008-12-18.49
10683 19897 10.68687 41.26546 315.66 54 878.90 2009-02-16.90
10684 18697 10.68756 41.26565 322.39 54 888.17 2009-02-26.17
10882 18846 10.68010 41.26661 239.91 55 142.23 2009-11-07.23
10883 18326 10.68083 41.26613 249.41 55 151.24 2009-11-16.24
10884 18358 10.68186 41.26558 262.25 55 162.63 2009-11-27.63
10885 18267 10.68271 41.26531 272.30 55 173.94 2009-12-08.94
10886 18343 10.68341 41.26513 278.92 55 182.90 2009-12-17.90
11808 17114 10.68681 41.26536 314.83 55 242.86 2010-02-15.86
11809 18415 10.68747 41.26558 322.27 55 253.27 2010-02-26.27
12110 19954 10.68059 41.26639 246.42 55 514.17 2010-11-14.17
12111 19866 10.68144 41.26587 257.32 55 523.18 2010-11-23.18
12112 19944 10.68230 41.26531 267.64 55 533.66 2010-12-03.66
12113 18974 10.68299 41.26516 274.87 55 542.56 2010-12-12.56
12114 19977 10.68367 41.26520 281.67 55 552.18 2010-12-22.18
13178 17453 10.68688 41.26540 315.50 55 609.15 2011-02-17.15
13179 17482 10.68753 41.26564 322.79 55 619.25 2011-02-27.25
13180 17023 10.68819 41.26608 332.15 55 630.12 2011-03-10.12
13227 19987 10.68029 41.26644 243.25 55 877.10 2011-11-12.10
13228 19003 10.68122 41.26587 254.80 55 886.22 2011-11-21.22
13229 19567 10.68213 41.26552 264.98 55 895.98 2011-11-30.98
13230 18932 10.68288 41.26521 273.93 55 906.56 2011-12-11.56
13231 19487 10.68355 41.26516 280.22 55 915.33 2011-12-20.33
13278 18973 10.68683 41.26548 315.75 55 974.76 2012-02-17.76
13279 18825 10.68765 41.26564 323.40 55 985.26 2012-02-28.26
13280 19285 10.68859 41.26629 335.95 55 999.21 2012-03-13.21
13281 18907 10.68685 41.27307 87.90 56 079.90 2012-06-01.90

Notes.

(a)

Exposure after good-time interval correction.

(b)

Modified Julian date at the start of the observation.

(c)

Universal time at the start of the observation.

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