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Table 1.

Summary of the observations.

SDSS – CSC 2.0

UV pre-selection DR7 DR12 DR14 TOT
sources
SDSS vs CSC 2.0 (3″) 2348 3276 1412 7036
Non-BAL (flags) 2217 3111 1412 6740
Non-BAL (Gibson09) 2211 3111 1412 6734
Non-BAL (Allen11) 2206 3111 1412 6731
Non-RL (flags) 1922 3111 1412 6445
Non-RL (Mingo16 MIXR) 1919 3096 1412 6427
Non-RL (Mingo16 crit.) 1919 3011 1376 6306
Dust-free 1729 1993 1027 4749
Host-free 1600 1965 1013 4578

X-ray pre-selection TOT
observations
(sources)

SDSS vs CSC 2.0 obs 2294 3318 1265 6877
(1559) (1911) (976) (4446)
Soft band 1988 2636 1000 5624
(1189) (1141) (567) (2897)
Θ <  10 arcmin 1510 1998 704 4212
(975) (1014) (477) (2466)
Available spectra 1362 1642 565 3569
(922) (995) (475) (2392)
Flux limit 1322 1560 548 3430
(891) (967) (474) (2332)

X-ray selection TOT
observations
(sources)

Γ 998 1066 378 2442
(683) (697) (337) (1717)
Eddington bias 706 535 144 1385
(477) (350) (131) (958)

Chandra COSMOS Legacy

UV pre-selection TOT
sources

COSMOS Type-1 AGN 1001
Ultra-vista data 882
Non-BAL (flags) 875
Non-BAL (Gibson09) 875
Non-BAL (Allen11) 875
Non-RL (flags) 872
Non-RL (R >  10) 823
Dust-free 289
Host-free 288

X-ray pre-selection TOT
sources

Soft band 273

X-ray selection TOT
sources

Γ 151
Eddington bias 140

Notes. Summary of the observations statistics among the different sub-samples and categories. Numbers in parentheses are sources corresponding to observations.

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