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Table 2.
Log of photometric observations for the blazar PG 1553+113.
| Date of | Telescope | Number of data points |
Date of | Telescope | Number of data points |
||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| observation | observation | ||||||||||
| (yyyy mm dd) | B | V | R | I | (yyyy mm dd) | B | V | R | I | ||
| 2016 01 12 | D | 3 | 0 | 3 | 3 | 2018 09 10 | A | 2 | 0 | 2 | 0 |
| 2016 05 28 | C1 | 2 | 2 | 2 | 1 | 2019 03 01 | A | 2 | 12 | 12 | 2 |
| 2016 05 29 | C1 | 3 | 2 | 2 | 1 | 2019 03 02 | A | 1 | 4 | 1 | 1 |
| 2016 06 10 | D | 3 | 0 | 3 | 3 | 2019 03 11 | F | 1 | 1 | 1 | 1 |
| 2016 06 11 | D | 3 | 3 | 3 | 3 | 2019 03 12 | F | 1 | 1 | 83 | 1 |
| 2016 07 02 | D | 2 | 2 | 2 | 2 | 2019 03 13 | F | 1 | 1 | 84 | 1 |
| 2016 07 03 | D | 2 | 2 | 2 | 2 | 2019 04 01 | B | 2 | 4 | 4 | 4 |
| 2016 07 03 | C1 | 2 | 3 | 5 | 3 | 2019 04 01 | A | 2 | 2 | 110 | 2 |
| 2016 07 06 | C1 | 2 | 2 | 2 | 3 | 2019 04 04 | D | 35 | 35 | 36 | 35 |
| 2016 07 07 | C | 0 | 2 | 2 | 0 | 2019 04 05 | F | 1 | 1 | 1 | 1 |
| 2016 07 10 | D | 2 | 1 | 2 | 1 | 2019 04 06 | F | 1 | 1 | 58 | 1 |
| 2016 08 04 | C | 0 | 0 | 2 | 0 | 2019 04 06 | A | 12 | 12 | 12 | 12 |
| 2016 08 06 | C | 0 | 2 | 2 | 0 | 2019 04 07 | F | 1 | 1 | 50 | 1 |
| 2016 08 11 | D | 2 | 2 | 2 | 1 | 2019 04 07 | A | 9 | 9 | 9 | 9 |
| 2017 03 23 | D | 3 | 3 | 3 | 3 | 2019 04 08 | A | 1 | 2 | 99 | 2 |
| 2017 03 24 | D | 3 | 2 | 3 | 2 | 2019 04 09 | A | 0 | 0 | 60 | 0 |
| 2017 03 27 | C | 0 | 3 | 3 | 0 | 2019 04 09 | F | 0 | 0 | 60 | 0 |
| 2017 03 29 | C | 0 | 3 | 3 | 0 | 2019 04 09 | E | 2 | 2 | 2 | 1 |
| 2017 03 31 | D | 3 | 3 | 2 | 2 | 2019 04 10 | A | 1 | 1 | 37 | 1 |
| 2017 04 24 | D | 3 | 3 | 3 | 3 | 2019 04 10 | F | 1 | 1 | 47 | 1 |
| 2017 04 25 | D | 2 | 3 | 3 | 3 | 2019 04 11 | A | 1 | 2 | 76 | 2 |
| 2017 06 22 | D | 3 | 3 | 3 | 3 | 2019 04 12 | F | 2 | 2 | 2 | 2 |
| 2017 06 23 | D | 2 | 2 | 2 | 2 | 2019 04 14 | F | 2 | 2 | 2 | 1 |
| 2018 03 09 | A | 0 | 0 | 2 | 0 | 2019 04 25 | B | 1 | 1 | 4 | 1 |
| 2018 03 10 | A | 0 | 9 | 9 | 9 | 2019 06 21 | E | 1 | 1 | 346 | 1 |
| 2018 05 07 | I | 17 | 17 | 17 | 16 | 2019 07 06 | C2 | 3 | 3 | 3 | 3 |
| 2018 05 10 | I | 61 | 61 | 61 | 61 | 2019 07 07 | C2 | 3 | 3 | 2 | 3 |
| 2018 05 12 | I | 0 | 67 | 67 | 67 | 2019 07 08 | C2 | 3 | 3 | 3 | 2 |
| 2018 05 13 | I | 0 | 0 | 40 | 0 | 2019 07 10 | E | 1 | 1 | 121 | 1 |
| 2018 05 28 | I | 51 | 54 | 53 | 53 | 2019 07 13 | G | 2 | 3 | 111 | 2 |
| 2018 05 29 | I | 35 | 32 | 39 | 37 | 2019 07 13 | H | 1 | 2 | 2 | 1 |
| 2018 06 04 | I | 30 | 34 | 34 | 34 | 2019 07 15 | H | 1 | 1 | 1 | 1 |
| 2018 06 05 | I | 17 | 17 | 17 | 17 | 2019 07 19 | G | 1 | 2 | 55 | 2 |
| 2018 07 07 | A | 0 | 4 | 3 | 3 | 2019 07 20 | G | 2 | 2 | 65 | 2 |
| 2018 07 08 | A | 0 | 4 | 5 | 5 | 2019 07 21 | A | 1 | 1 | 11 | 0 |
| 2018 07 14 | D | 2 | 2 | 2 | 2 | 2019 07 21 | H | 1 | 2 | 2 | 2 |
| 2018 07 15 | D | 6 | 1 | 2 | 2 | 2019 07 22 | A | 1 | 1 | 14 | 0 |
| 2018 07 21 | D | 14 | 18 | 19 | 21 | 2019 08 18 | A | 1 | 0 | 0 | 0 |
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