| B2_1520p31-20210411-S001-R001-B-034846.fts |
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| Only less than 50 stars was detected |
| B2_1520p31-20210411-S001-R001-I-035235.fts |
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| Only less than 50 stars was detected |
| B2_1520p31-20210411-S001-R001-R-035119.fts |
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| Only less than 50 stars was detected |
| B2_1520p31-20210411-S001-R001-V-035004.fts |
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| Only less than 50 stars was detected |