Table 1: Previously identified GPS sources.
Source ID z Original Ref. $\nu_{\rm peak}$ $\alpha_{\rm below}$ $\alpha_{\rm above}$ $Var_{\Delta S,\max}$ $\nu_{Var_{\Delta S}\max}$ Proposed

B1950 class GHz max GHz class

0048-097 BLO $\ge$ 0.2 GPS 9 20.4 0.09 -0.22 7.59 8 idb

0153+744 LPQ 2.338 GPS 4 2.1 0.70 -0.76 5.33 37 c

0215+015 BLO 1.72 HFP 1 12.4 0.40 -0.40 24.33 14.5 idb

0218+357 BLO 0.936 GPS 4 ... ... -0.16 1.71 8 f

0238-084 GAL 0.0049 GPS 2 ... ... -0.02 6.78 37 idb

0248+430 LPQ 1.316 GPS 5 4.9 0.28 -0.40 6.95 37 f

0252-549 QSO 0.539 inv 9 37.4 0.51 -0.89 0.76 90 c

0332-403 HPQ 1.445 GPS 9 10.6 0.17 -0.17 1.69 90 f

0402-362 LPQ 1.417 inv 9 46.8 0.22 -0.40 3.83 90 f

0454-234 HPQ 1.003 GPS 9 9.2 0.10 -0.28 3.05 90 f

0528+134 BLO 2.060 GPS 4 27.8 0.30 -0.31 13.09 8 idb

0537-441 BLO 0.896 GPS 9 ... ... -0.01 4.33 90 f

0539-057 HPQ 0.839 inv 9 5.8 0.20 -0.31 0.66 37 f

0552+398 QSO 2.36 GPS 4 8.9 1.46 -0.39 3.09 37 c

0642+449 LPQ 3.4 HFP 1 18.6 0.61 -0.51 4.35 90 c

0738+313 QSO 0.631 GPS 4 2.6 0.26 -0.30 2.94 37 f

0741-063 N/A N/A GPS 3 0.6 0.83 -0.86 2.17 37 gps

0742+103 GAL 2.624 GPS 4 2.7 0.55 -0.53 1.27 8 gps

0743-006 LPQ 0.994 GPS 10 7.9 0.62 -0.44 1.05 90 gps

0906+430 HPQ 0.668 CSS 11 ... ... -0.77 3.61 37 s

0923+392 QSO 0.698 HFP 1 11.0 0.49 -0.32 7.33 8 c

1057-797 QSO N/A GPS 9 17.6 0.32 -0.43 2.38 90 f

1145-071 QSO 1.342 inv 9 3.7 0.24 -0.34 0.62 90 f

1334-127 HPQ 0.54 GPS 9 37.0 0.33 -0.54 3.64 14.5 c

1349-439 BLO 0.05 GPS 9 10.9 0.32 -0.21 3.03 90 f

1546+027 HPQ 0.413 inv 9 35.6 0.18 -0.17 4.16 90 f

1637+574 LPQ 0.75 conv 6 ... ... -0.03 5.62 37 f

1749+096 BLO 0.32 HFP 1 37.1 0.36 -0.60 18.16 90 idb

1828+487 LPQ 0.692 CSS 7 ... ... -0.7 2.37 90 s

1936-155 HPQ 1.657 GPS 8 11.9 0.21 -0.23 4.58 90 f

1954-388 HPQ 0.63 GPS 9 22.1 0.29 -0.30 2.81 90 f

2008-159 LPQ 1.181 GPS 8 17.3 0.45 -0.49 4.00 90 c

2021+614 GAL 0.2266 GPS 4 5.66 0.96 -0.39 2.00 37 gps

2022+171 LPQ 1.05 HFP 1 17.8 0.44 -0.77 0.41 90 c

2121+053 QSO 1.878 HFP 1 6.0 0.21 -0.03 11.35 22 idb

2128-123 LPQ 0.501 GPS 9 9.9 0.24 -0.53 1.03 90 c

2134+004 LPQ 1.932 GPS,HFP 5,1 4.9 1.1 -0.51 2.62 90 gps

2136+141 LPQ 2.427 GPS 9 10.2 0.33 -0.39 2.49 8 f

2145+067 LPQ 0.99 inv 9 21.9 0.39 -0.39 6.16 22 idb

2216-038 LPQ 0.901 inv 9 7.4 0.30 -0.72 3.34 $\approx$ 5 c

2230+114 HPQ 1.037 CSS 7 ... ... -0.22 5.06 90 f

2243-123 HPQ 0.63 inv 9 8.8 0.12 -0.17 1.77 90 f

2254-204 BLO N/A GPS 9 27.9 0.41 -0.92 1.71 90 c

2255-282 LPQ 0.926 GPS 9 28.1 0.74 -0.47 7.21 90 idb

**Table 1:** Previously identified GPS sources.
Source	ID	z	Original	Ref.	$\nu_{\rm peak}$	$\alpha_{\rm below}$	$\alpha_{\rm above}$	$Var_{\Delta S,\max}$	$\nu_{Var_{\Delta S}\max}$	Proposed
B1950			class		GHz			max	GHz	class
0048-097	BLO	$\ge$ 0.2	GPS	9	20.4	0.09	-0.22	7.59	8	idb
0153+744	LPQ	2.338	GPS	4	2.1	0.70	-0.76	5.33	37	c
0215+015	BLO	1.72	HFP	1	12.4	0.40	-0.40	24.33	14.5	idb
0218+357	BLO	0.936	GPS	4	...	...	-0.16	1.71	8	f
0238-084	GAL	0.0049	GPS	2	...	...	-0.02	6.78	37	idb
0248+430	LPQ	1.316	GPS	5	4.9	0.28	-0.40	6.95	37	f
0252-549	QSO	0.539	inv	9	37.4	0.51	-0.89	0.76	90	c
0332-403	HPQ	1.445	GPS	9	10.6	0.17	-0.17	1.69	90	f
0402-362	LPQ	1.417	inv	9	46.8	0.22	-0.40	3.83	90	f
0454-234	HPQ	1.003	GPS	9	9.2	0.10	-0.28	3.05	90	f
0528+134	BLO	2.060	GPS	4	27.8	0.30	-0.31	13.09	8	idb
0537-441	BLO	0.896	GPS	9	...	...	-0.01	4.33	90	f
0539-057	HPQ	0.839	inv	9	5.8	0.20	-0.31	0.66	37	f
0552+398	QSO	2.36	GPS	4	8.9	1.46	-0.39	3.09	37	c
0642+449	LPQ	3.4	HFP	1	18.6	0.61	-0.51	4.35	90	c
0738+313	QSO	0.631	GPS	4	2.6	0.26	-0.30	2.94	37	f
0741-063	N/A	N/A	GPS	3	0.6	0.83	-0.86	2.17	37	gps
0742+103	GAL	2.624	GPS	4	2.7	0.55	-0.53	1.27	8	gps
0743-006	LPQ	0.994	GPS	10	7.9	0.62	-0.44	1.05	90	gps
0906+430	HPQ	0.668	CSS	11	...	...	-0.77	3.61	37	s
0923+392	QSO	0.698	HFP	1	11.0	0.49	-0.32	7.33	8	c
1057-797	QSO	N/A	GPS	9	17.6	0.32	-0.43	2.38	90	f
1145-071	QSO	1.342	inv	9	3.7	0.24	-0.34	0.62	90	f
1334-127	HPQ	0.54	GPS	9	37.0	0.33	-0.54	3.64	14.5	c
1349-439	BLO	0.05	GPS	9	10.9	0.32	-0.21	3.03	90	f
1546+027	HPQ	0.413	inv	9	35.6	0.18	-0.17	4.16	90	f
1637+574	LPQ	0.75	conv	6	...	...	-0.03	5.62	37	f
1749+096	BLO	0.32	HFP	1	37.1	0.36	-0.60	18.16	90	idb
1828+487	LPQ	0.692	CSS	7	...	...	-0.7	2.37	90	s
1936-155	HPQ	1.657	GPS	8	11.9	0.21	-0.23	4.58	90	f
1954-388	HPQ	0.63	GPS	9	22.1	0.29	-0.30	2.81	90	f
2008-159	LPQ	1.181	GPS	8	17.3	0.45	-0.49	4.00	90	c
2021+614	GAL	0.2266	GPS	4	5.66	0.96	-0.39	2.00	37	gps
2022+171	LPQ	1.05	HFP	1	17.8	0.44	-0.77	0.41	90	c
2121+053	QSO	1.878	HFP	1	6.0	0.21	-0.03	11.35	22	idb
2128-123	LPQ	0.501	GPS	9	9.9	0.24	-0.53	1.03	90	c
2134+004	LPQ	1.932	GPS,HFP	5,1	4.9	1.1	-0.51	2.62	90	gps
2136+141	LPQ	2.427	GPS	9	10.2	0.33	-0.39	2.49	8	f
2145+067	LPQ	0.99	inv	9	21.9	0.39	-0.39	6.16	22	idb
2216-038	LPQ	0.901	inv	9	7.4	0.30	-0.72	3.34	$\approx$ 5	c
2230+114	HPQ	1.037	CSS	7	...	...	-0.22	5.06	90	f
2243-123	HPQ	0.63	inv	9	8.8	0.12	-0.17	1.77	90	f
2254-204	BLO	N/A	GPS	9	27.9	0.41	-0.92	1.71	90	c
2255-282	LPQ	0.926	GPS	9	28.1	0.74	-0.47	7.21	90	idb

Source LaTeX | All tables | In the text

	1 Introduction
	2 Sample and observations
	3 Source classification
	4 Results
	5 Discussion
	6 Conclusions
	References