The "S/Q" (source/quality) codes are as follows:
1 = Master is on CD.
1.5 = Master is SCMS encoded MiniDisc or CD-r, or was off-lined from FM. Excellent quality.
2 = Master is high quality analog tape dub from CD. Very good quality.
2.5 = Source is remastered vinyl. Pops and surface noise has been mostly removed - in some cases, completely. Good++ quality.
3 = Source master was vinyl or tape. Quality is fair to good (some vinyl surface noise).
4 = Source master was old audio tape. Quality is fair to average (some dropout & begin/endings may be choppy).
5 = Source master was vinyl. Quality is poor (lots of surface noise & pops, etc. - but better than nothing).
Artist S/Q Song Title
ZAGER & EVANS 1 IN THE YEAR 2525
ZOMBIES 1 SHE'S NOT THERE
1 TELL HER NO
1 TIME OF THE SEASON
ZZ TOP 1 LEGS
1 SHARP DRESSED MAN
1 SLEEPING BAG
2 LA GRANGE