\begin{table} %Ta1 \caption{\label{t:obs}} \small%\centerline { \begin{tabular}{lcccccccccc} \hline \hline Name & \multicolumn{2}{c}{X-ray centroid} & Id & Date & \multicolumn{2}{c}{Filter} & Frame & \multicolumn{3}{c}{Net exposure (ks)} \\ & RA & Dec & & & MOS & pn & pn &MOS1 & MOS2 & pn \\ \hline RXC~J0043.4-2037 & 00 ~ 43 ~ 24.5 & --20 ~ 43 ~ 31.2 & 0042340201 & 2002-01-04 & Thin & Thin & EFF & 11.4 & 11.4 & 7.1 \\ RXC~J0232.2-4420 & 02 ~ 32 ~ 18.8 & --44 ~ 32 ~ 51.9 & 0042340301 & 2002-07-11 & Thin & Thin & EFF & 12.7 & 12.1 & 8.7 \\ RXC~J0307.0-2840 & 03 ~ 07 ~ 02.2 & --28 ~ 07 ~ 55.2 & 0042340501 & 2001-02-16 & Thin & Thin & EFF & 12.4 & 12.7 & 9.3 \\ RXC~J0516.7-5430 & 05 ~ 16 ~ 35.2 & --54 ~ 16 ~ 36.8 & 0205330301 & 2004-01-13 & Thin & Thin & FF & 10.6 & 11.1 & 8.9 \\ RXC~J0528.9-3927 & 05 ~ 28 ~ 52.5 & --39 ~ 28 ~ 16.7 & 0042340801 & 2001-09-15 & Thin & Thin & EFF & 7.2 & 6.9 & 3.7 \\ RXC~J0532.9-3701 & 05 ~ 32 ~ 55.9 & --37 ~ 32 ~ 34.5 & 0042341801 & 2002-10-07 & Thin & Thin & EFF & 10.5 & 11.3 & 7.3 \\ RXC~J0547.6-3152 & 05 ~ 47 ~ 38.3 & --31 ~ 47 ~ 28.8 & 0201900901 & 2004-03-07 & Thin & Thin & EFF & 21.8 & 22.1 & 17.6 \\ RXC~J0645.4-5413 & 06 ~ 45 ~ 30.0 & --54 ~ 45 ~ 42.1 & 0201901201 & 2004-05-07 & Thin & Thin & EFF & 11.6 & 12.2 & 9.6 \\ RXC~J0658.5-5556 & 06 ~ 58 ~ 30.2 & --55 ~ 58 ~ 33.7 & 0112980201 & 2000-10-21 & Thin & Thin & EFF & 25.7 & 23.7 & 21.1 \\ RXC~J0945.4-0839 & 09 ~ 45 ~ 25.1 & --08 ~ 45 ~ 11.7 & 0017540101 & 2001-12-02 & Medium & Medium & FF & 7.1 & 6.4 & 4.4 \\ RXC~J0958.3-1103 & 09 ~ 58 ~ 21.9 & --11 ~ 58 ~ 48.2 & 0201903501 & 2004-06-17 & Thin & Thin & EFF & 7.9 & 7.9 & 5.3 \\ RXC~J2129.6+0005 & 21 ~ 29 ~ 39.8 & +00 ~ 29 ~ 18.5 & 0093030201 & 2002-10-29 & Medium & Medium & EFF & 38.4 & 39.4 & 25.6 \\ RXC~J2218.6-3853 & 22 ~ 18 ~ 39.9 & --38 ~ 18 ~ 43.6 & 0201903001 & 2004-10-24 & Thin & Thin & EFF & 20.4 & 20.3 & 12.0 \\ RXC~J2234.5-3744 & 22 ~ 34 ~ 27.1 & --37 ~ 34 ~ 07.5 & 0018741701 & 2001-05-03 & Thin & Thin & FF & 6.7 & 6.6 & 4.2 \\ RXC~J2308.3-0211 & 23 ~ 08 ~ 22.3 & --02 ~ 08 ~ 32.1 & 0205330501 & 2004-06-05 & Thin & Thin & FF & 9.6 & 10.0 & 7.8 \\ RXC~J2337.6+0016 & 23 ~ 37 ~ 37.8 & +00 ~ 37 ~ 15.5 & 0042341301 & 2001-12-06 & Thin & Thin & EFF & 12.4 & 12.0 & 8.3 \\ Abell~68 & 00 ~ 37 ~ 06.2 & +09 ~ 37 ~ 28.7 & 0084230201 & 2001-12-14 & Medium & Medium & EFF & 24.9 & 23.8 & 18.2 \\ Abell~115 & 00 ~ 55 ~ 50.1 & +26 ~ 55 ~ 35.7 & 0203220101 & 2004-07-16 & Medium & Medium & EFF & 36.0 & 36.8 & 29.5 \\ Abell~209 & 01 ~ 31 ~ 52.6 & --13 ~ 31 ~ 35.5 & 0084230301 & 2001-01-15 & Medium & Medium & EFF & 17.3 & 16.1 & 12.8 \\ Abell~267 & 01 ~ 52 ~ 42.0 & +01 ~ 52 ~ 41.2 & 0084230401 & 2002-01-02 & Medium & Medium & EFF & 17.2 & 17.1 & 12.4 \\ Abell~383 & 02 ~ 48 ~ 03.3 & --03 ~ 48 ~ 43.6 & 0084230501 & 2002-08-17 & Medium & Medium & EFF & 28.1 & 28.0 & 21.5 \\ Abell~773 & 09 ~ 17 ~ 52.9 & +51 ~ 17 ~ 19.4 & 0084230601 & 2001-04-26 & Medium & Medium & EFF & 13.0 & 14.7 & 15.9 \\ Abell~781 & 09 ~ 20 ~ 24.8 & +30 ~ 20 ~ 05.7 & 0150620201 & 2003-04-22 & Medium & Medium & FF & 14.0 & 14.1 & 11.6 \\ Abell~901 & 09 ~ 55 ~ 57.7 & --09 ~ 55 ~ 06.3 & 0148170101 & 2003-05-06 & Thin & Thin & FF & 19.4 & 18.6 & 53.2 \\ Abell~963 & 10 ~ 17 ~ 03.2 & +39 ~ 17 ~ 56.5 & 0084230701 & 2001-11-02 & Medium & Medium & EFF & 23.8 & 24.7 & 17.9 \\ Abell~1413 & 11 ~ 55 ~ 18.3 & +23 ~ 55 ~ 12.7 & 0112230501 & 2000-12-06 & Thin & Thin & FF & 23.6 & 24.4 & 18.8 \\ Abell~1689 & 13 ~ 11 ~ 29.3 & --01 ~ 11 ~ 26.7 & 0093030101 & 2001-12-24 & Thin & Thin & EFF & 36.8 & 37.0 & 32.6 \\ Abell~1758 & 13 ~ 32 ~ 44.6 & +50 ~ 32 ~ 46.5 & 0142860201 & 2002-11-12 & Medium & Medium & FF & 38.1 & 40.1 & 19.4 \\ Abell~1763 & 13 ~ 35 ~ 18.1 & +41 ~ 35 ~ 03.9 & 0084230901 & 2002-12-13 & Medium & Medium & EFF & 12.3 & 12.0 & 9.3 \\ Abell~1835 & 14 ~ 01 ~ 01.9 & +02 ~ 01 ~ 35.5 & 0098010101 & 2000-06-28 & Thin & Thin & FF & 25.3 & 25.3 & 24.7 \\ Abell~1914 & 14 ~ 26 ~ 00.8 & +37 ~ 26 ~ 38.8 & 0112230201 & 2002-12-18 & Thin & Medium & EFF & 20.5 & 21.2 & 14.5 \\ Abell~2204 & 16 ~ 32 ~ 47.1 & +05 ~ 32 ~ 32.3 & 0112230301 & 2001-09-12 & Medium & Medium & FF & 17.5 & 18.5 & 14.3 \\ Abell~2218 & 16 ~ 35 ~ 53.8 & +66 ~ 35 ~ 32.4 & 0112980101 & 2002-09-28 & Thin & Thin & EFF & 16.7 & 16.9 & 13.8 \\ Abell~2261 & 17 ~ 22 ~ 26.0 & +32 ~ 22 ~ 47.4 & 0093031001 & 2003-08-29 & Thin & Thin & EFF & 2.7 & 2.9 & 0.9 \\ Abell~2390 & 21 ~ 53 ~ 37.1 & +17 ~ 53 ~ 46.4 & 0111270101 & 2001-06-19 & Thin & Thin & FF & 10.3 & 10.0 & 8.8 \\ Abell~2667 & 23 ~ 51 ~ 39.2 & --26 ~ 51 ~ 03.5 & 0148990101 & 2003-06-21 & Medium & Medium & FF & 22.2 & 22.9 & 14.1 \\ Z7160 & 14 ~ 57 ~ 15.2 & +22 ~ 57 ~ 31.2 & 0108670201 & 2002-08-03 & Medium & Medium & FF & 31.2 & 31.6 & 26.3 \\ \hline \end{tabular}} \smallskip The cluster center is in sky coordinates in epoch J2000. The MOS data are in EE mode except that the MOS1 data of Abell1835 are in window mode, which cannot be used for this work. \end{table}