Table A.1.
Optical datasets contributing to this work
| Observatory | Country | Diameter | Nobs | Symbol | Observatory | Country | Diameter | Nobs | Symbol |
|---|---|---|---|---|---|---|---|---|---|
| Abastumani | Georgia | 70 | 589 | ° | Perkins | USA | 183 | 1436 | △ |
| Belogradchik | Bulgaria | 60 | 17 | ° | Roque (JKT) | Spain | 100 | 413 | △ |
| Calar Alto | Spain | 220 | 5 | ° | Roque (LT) | Spain | 200 | 14 | △ |
| Cerro Tololo | Chile | 100 | 5 | ° | Roque (NOT) | Spain | 256 | 74 | △ |
| Cerro Tololo | Chile | 40 | 6 | ° | Roque (TNG) | Spain | 358 | 4 | △ |
| Cerro Tololo (SARA) | Chile | 60 | 31 | ° | Rozhen | Bulgaria | 200 | 36 | △ |
| Crimean (AP7p) | Russia | 70 | 980 | ° | Rozhen | Bulgaria | 50/70 | 174 | △ |
| Crimean (GE) | Russia | 70 | 2 | ° | SAO RAS | Russia | 100 | 39 | + |
| Crimean (ST-7) | Russia | 70 | 455 | ° | SAO RAS | Russia | 50 | 278 | + |
| Crimean (ST-7;pol) | Russia | 70 | 621 | ° | Siena | Italy | 30 | 24 | + |
| Haleakala (LCO) | Havaii | 40 | 11 | ▫ | Sierra Nevada | Spain | 150 | 3 | + |
| Hans Haffner | Germany | 50 | 675 | ▫ | Sierra Nevada | Spain | 90 | 203 | + |
| Kitt Peak (SARA) | USA | 90 | 260 | ▫ | Sirio | Italy | 25 | 5 | + |
| Kottamia | Egypt | 188 | 51 | ▫ | St.Petersburg | Russia | 40 | 430 | + |
| Lowell (DCT) | USA | 430 | 43 | ▫ | Steward (Kitt Peak) | USA | 230 | 49 | + |
| Lowell (LDT) | USA | 430 | 22 | ▫ | Steward (Mt. Bigelow) | USA | 164 | 211 | + |
| Lulin (SLT) | Taiwan | 40 | 779 | ▫ | Stocker | USA | 61 | 104 | + |
| McDonald (LCO) | USA | 100 | 4 | ▫ | Teide (IAC80) | Spain | 80 | 206 | + |
| McDonald (LCO) | USA | 40 | 15 | ▫ | Teide (LCO) | Spain | 100 | 5 | x |
| MMT | USA | 650 | 3 | + | Teide (LCO) | Spain | 40 | 17 | x |
| Mt.Maidanak (FLI)a | Uzbekistan | 150 | 160 | ▫ | Teide (STELLA-I) | Spain | 120 | 39 | x |
| Mt.Maidanak (Apogee)a | Uzbekistan | 100 | 365 | △ | Tien Shan | Kazakhstan | 100 | 49 | x |
| Mt.Maidanak (FLI)a | Uzbekistan | 60 | 1026 | △ | Tijarafe | Spain | 40 | 710 | x |
| New Mexico Skies | USA | 30 | 19 | △ | Vidojevica | Serbia | 140/60 | 428/108 | x |
Notes. Columns list the observatory (with instrument), country, telescope diameter (in cm), number of observations (Nobs), and the symbol used in Figure 1. For the Vidojevica observatory, the entry combines two telescopes (140 cm and 60 cm) with the corresponding numbers of observations (428 and 108, respectively). Data from Mt. Maidanak observatory (marked with a) are based on Ehgamberdiev 2018.
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