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Table 1

Description of the HST additional archive data sets used in this paper, other than those from GO-10775.

ID Date N × Exptime Filt Instrument Program PI

ARP 2 May 11 1997 1 × 260s + 5 × 300s F814W WFPC2 6701 Ibata, R.
May 11 1997 5 × 300s + 1 × 350s F606W WFPC2 6701 Ibata, R.

NGC 104 Sep. 30 2002 - Oct 11 2002 1 × 10s + 6 × 100s + 3 × 115s F435W ACS/WFC 9281 Grindlay, G.
Jul. 07 2002 6 × 60s + 1 × 150s F475W ACS/WFC 9443 King, I. R.
Jul. 07 2002 20 × 60s F475W ACS/WFC 9028 Meurer, J.

NGC 362 Dec. 04 2003 4 × 340s F435W ACS/WFC 10005 Lewin, W.
Dec. 04 2003 2 × 110s + 2 × 120s F625W ACS/WFC 10005 Lewin, W.
Sep. 30 2005 3 × 70s + 20 × 340s F435W ACS/WFC 10615 Anderson, S.

NGC 5286 Jul. 07 1997 3 × 140s + 1 × 100s F555W WFPC2 6779 Gebhardt, K.
Jul. 07 1997 3 × 140s + 1 F814W WFPC2 6779 Gebhardt, K.

NGC 5927 May 08 1994 6 × 50s + 8 × 600s F555W WFPC2 5366 Zinn, R.
May 08 1994 6 × 70s + 8 × 800s F814W WFPC2 5366 Zinn, R.
Aug. 06 2002 30s+500s F606W ACS/WFC 9453 Brown, T.
Aug. 06 2002 15s+340s F814W ACS/WFC 9453 Brown, T.
Aug. 28 2010 50s + 2 × 455s F814W UVIS/WFC3 11664 Brown, T.
Aug. 28 2010 50s + 2 × 665s F555W UVIS/WFC3 11664 Brown, T.

NGC 6121 Jun. 19 2003 15 × 360s F775W ACS/WFC 9578 Rhodes, J.

NGC 6218 Jun. 14 2004 4 × 340s F435W ACS/WFC 10005 Lewin, W.
Jun. 14 2004 2 × 40s + 2 × 60s F625W ACS/WFC 10005 Lewin, W.

NGC 6352 Mar. 29 1995 7 × 160s F555W WFPC2 5366 Zinn, R.
Mar. 29 1995 6 × 260s F814W WFPC2 5366 Zinn, R.

NGC 6388 Jun. 30 - Jul 03 2010 6 × 880s F390W UVIS/WFC3 11739 Piotto, G.

NGC 6397 Aug. 01 2004 - Jun 28 2005 5 × 13s + 5 × 340s F435W ACS/WFC 10257 Anderson, J.

NGC 6441 Aug. 04-08 2010 6 × 880s F390W UVIS/WFC3 11739 Piotto, G.

NGC 6496 Apr. 01 1999 2 × 1100s+4 × 1300s F606W WFPC2 6572 Paresce, F.
Apr. 01 1999 2 × 1100s+4 × 1300s F814W WFPC2 6572 Paresce, F.

NGC 6535 Aug. 04 1997 8 × 140s F555W WFPC2 6625 Buonanno, R.
Aug. 04 1997 9 × 160s F814W WFPC2 6625 Buonanno, R.

NGC 6624 Oct. 15 1994 6 × 50s + 8 × 600s F814W WFPC2 5366 Zinn, R.

NGC 6637 Mar. 31 1995 6 × 60s + 8 × 700s F814W WFPC2 5366 Zinn, R.

NGC 6652 Set. 05 1997 12 × 160s F814W WFPC2 6517 Chaboyer, B.

NGC 6656 Feb. 22 1999 - Jun 15 1999 192 × 260s F814W WFPC2 7615 Sahu, K.
Feb. 22 1999 - Jun 15 1999 72 × 260s F606W WFPC2 7615 Sahu, K.

NGC 6681 May 09 2009 32 × 300s F450W WFPC2 11988 Chaboyer, B

NGC 6838 May 21 2000 2 × 100s F439W WFPC2 8118 Piotto, G.
May 21 2000 2 × 30s F555W WFPC2 8118 Piotto, G.

TERZAN 7 Mar. 18 1997 1 × 260s + 5 × 300s F814W WFPC2 6701 Ibata, R.
Mar. 18 1997 5 × 300s + 1 × 350s F606W WFPC2 6701 Ibata, R.

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