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Table 2

Optical observations of GRB 100219A in 2010 taken from the GCN circulars.

Telescope Date Middle time Magnitude Filter Reference

Akeno 19 Feb 15:22:34 18.5 ± 0.3 IC GCN 10440

Okayama 19 Feb. 15:25:30 17.8 ± 0.2 IC GCN 10440
Okayama 19 Feb. 15:36:21 17.5 ± 0.1 IC GCN 10440
Okayama 19 Feb. 15:47:07 18.1 ± 0.3 IC GCN 10440
Okayama 19 Feb. 16:50:40 18.9 ± 0.3 IC GCN 10440

GAO 19 Feb. 16:15:24 20.5 ± 0.2 RC GCN 10452
GAO 19 Feb. 16:34:45 19.6 ± 0.3 IC GCN 10452

GROND 20 Feb. about 00:50 21.5 i GCN 10439

Notes. GROND started the observation at 00:30 UT.

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