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Table 1
Summary of time delay measurements.
| Object (reference for data) | Wavebands | Time delay | Reported valuea | Our measurementa |
| (days) | (days) | |||
|
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| Q0142−100 (Koptelova et al. 2012) | R | ΔtAB | 89 ± 11 | ? |
|
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| JVAS B0218+357 (Cohen et al. 2000) | 8 GHz, 15 GHz | ΔtAB | 10.1 (95% CI) |
10.7 ± 0.8 |
|
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| HE 0435−1223 (Courbin et al. 2011; | R | ΔtAB | 8.4 ± 2.1 | 9.8 ± 1.1 |
| Blackburne et al. 2014) | ΔtAC | 0.6 ± 2.3 | 3.1 ± 2.2 | |
| ΔtAD | 14.9 ± 2.1 | 13.7 ± 1.0 | ||
| ΔtBC | −7.8 ± 0.8 | −8.0 ± 1.0 | ||
| ΔtBD | 6.5 ± 0.7 | 6.2 ± 1.5 | ||
| ΔtCD | 14.3 ± 0.8 | 13.6 ± 0.8 | ||
|
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| SBS 0909+532 (Goicoechea et al. 2008; | r | ΔtAB | −50 |
−45.9 ± 3.1 |
| Hainline et al. 2013) | ||||
|
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| RX J0911.4+0551 (Hjorth et al. 2002) | I | Δt(A1 + A2 + A3)B | −146 ± 8 (2σ) | −141.9 ± 12.3 |
|
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| FBQ 0951+2635 (Jakobsson et al. 2005) | R | ΔtAB | 16 ± 2 | 7.8 ± 14.0 |
|
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| Q0957+561 (Shalyapin et al. 2012) | r, g | ΔtAB | 417.4 ± 0.9 | 420.0 ± 1.4 |
|
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| SDSS J1001+5027 (Rathna Kumar et al. 2013) | R | ΔtAB | 119.3 ± 3.3 | 119.7 ± 1.8 |
|
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| SDSS J1004+4112 (Fohlmeister et al. 2007; | R, r | ΔtAB | −40.6 ± 1.8 | −37.2 ± 3.1 |
| Fohlmeister et al. 2008) | ΔtAC | −821.6 ± 2.1 | −822.5 ± 7.4 | |
| ΔtBC | −777.1 ± 9.2 | |||
|
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| SDSS J1029+2623 (Fohlmeister et al. 2013) | r | ΔtA(B + C) | 744 ± 10 (90% CI) | 734.3 ± 3.8 |
|
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| HE 1104−1805 (Poindexter et al. 2007) | R, V | ΔtAB | −152.2 |
−157.1 ± 3.6 |
|
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| PG 1115+080 (Tsvetkova et al. 2010) | R | Δt(A1 + A2)B | 4.4 |
8.7 ± 3.6 |
| Δt(A1 + A2)C | −12 |
−12.1 ± 3.6 | ||
| ΔtBC | −16.4  |
−23.9 ± 5.7 | ||
|
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| RX J1131−1231 (Tewes et al. 2013b) | R | ΔtAB | 0.7 ± 1.0 | 0.0 ± 0.6 |
| ΔtAC | 0.0 ± 1.3 | −1.1 ± 0.8 | ||
| ΔtAD | 90.6 ± 1.4 | 91.7 ± 0.7 | ||
| ΔtBC | −0.7 ± 1.5 | −1.4 ± 1.6 | ||
| ΔtBD | 91.4 ± 1.2 | 92.4 ± 1.4 | ||
| ΔtCD | 91.7 ± 1.5 | 91.3 ± 1.3 | ||
|
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| SDSS J1206+4332 (Eulaers et al. 2013) | R | ΔtAB | 111.3 ± 3 | 110.3 ± 1.9 |
|
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| H1413+117 (Goicoechea & Shalyapin 2010) | r | ΔtAB | −17 ± 3 | −14.3 ± 5.5 |
| ΔtAC | −20 ± 4 | −19.9 ± 10.9 | ||
| ΔtAD | 23 ± 4 | 24.0 ± 6.8 | ||
| ΔtBC | ? | |||
| ΔtBD | ? | |||
| ΔtCD | 28.6 ± 9.4 | |||
|
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| JVAS B1422+231 (Patnaik & Narasimha 2001) | 15 GHz | ΔtAB | −1.5 ± 1.4 | 1.1 ± 2.1 |
| ΔtAC | 7.6 ± 2.5 | −0.4 ± 3.0 | ||
| ΔtBC | 8.2 ± 2.0 | −0.4 ± 3.2 | ||
|
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| SBS 1520+530 (Burud et al. 2002b) | R | ΔtAB | 130 ± 3 | 124.2 ± 8.1 |
|
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| CLASS B1600+434 (Burud et al. 2000) | I | ΔtAB | 51 ± 4 (95% CI) | ? |
| CLASS B1600+434 (Koopmans et al. 2000) | 8.5 GHz | ΔtAB | 47 |
? |
|
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| CLASS B1608+656 (Fassnacht et al. 1999; | 8.5 GHz | ΔtAB | −31.5 |
−32.4 ± 3.0 |
| Fassnacht et al. 2002) | ΔtAC | 2.3 ± 1.2 | ||
| ΔtAD | 45.7 ± 0.9 | |||
| ΔtBC | 36.0 |
37.1 ± 1.9 | ||
| ΔtBD | 77.0 |
77.6 ± 3.5 | ||
| ΔtCD | 41.3 ± 1.6 | |||
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| SDSS J1650+4251 (Vuissoz et al. 2007) | R | ΔtAB | 49.5 ± 1.9 | 59.2 ± 15.9 |
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| PKS 1830−211 (Lovell et al. 1998) | 8.6 GHz | ΔtAB | 26 |
28.6 ± 8.0 |
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| WFI J2033−4723 (Vuissoz et al. 2008) | R | ΔtAB | −35.5 ± 1.4 | −37.6 ± 2.1 |
| ΔtAC | 23.6 ± 2.5 | |||
| ΔtBC | 62.6 |
65.4 ± 4.3 | ||
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| HE 2149−2745 (Burud et al. 2002a) | V | ΔtAB | 103 ± 12 | 72.6 ± 17.0 |
|
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| HS 2209+1914 (Eulaers et al. 2013) | R | ΔtAB | −20.0 ± 5 | −22.9 ± 5.3 |
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