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Table B.1

Log of the VLA observations at the X-band (ν = 9 GHz; Δν = 2 GHz).

Date-OBS UTC ΔT Source Phase cal Flux cal FWHM PA RMS
(min) (″ × ″) (degree) (μJy/beam)
2023-01-24a 14:52:34.5 16 HD 137909 J1513+2338 3c286 0.54 × 0.63 64.12 16
2023-01-24a 15:15:31.5 16 HD 140160 J1608+1029 3c286 0.55 × 0.66 51.10 17
2023-01-25b 12:58:13.5 16 HD 125248 J1432-1801 3c286 0.63 × 1.04 4.02 13
2023-01-25b 13:17:10.5 9 HD 130559 J1432-1801 3c286 0.66 × 0.86 6.90 15
2023-01-25b 13:30:37.5 9 HD 122532 J1352-4412 3c286 0.65 × 3.06 13.65 21
2023-02-01 01:07:28.5 9 HD 15089 J0228+6721 3c147 0.56 × 2.01 19.48 130†
2023-02-01 01:20:25.5 9 HD 21699 J0349+4609 3c147 0.60 × 0.67 15.14 10
2023-02-01 01:34:22.5 16 HD 224801 J2355+4950 3c147 0.63 × 0.79 −79.56 7
2023-02-13 12:07:19.5 16 HD 142884 J1626-2951 3c286 0.58 × 1.37 −17.00 8
2023-02-13 12:26:46.5 16 HD 145102 J1626-2951 3c286 0.57 × 1.52 −15.38 8
2023-02-14c 01:22:34.5 16 HD 49976 J0653-0625 3c147 0.63 × 1.23 −35.32 12
2023-02-14c 01:35:04.5 16 HD 49333 J0650-1637 3c147 0.59 × 1.71 −31.57 13
2023-02-14c 06:56:37.5 16 HD 55522 J0648-3044 3c147 0.61 × 1.94 28.29 9
2023-02-14c 07:17:34.5 9 HD 74067 J0828-3731 3c147 0.59 × 3.02 14.15 14
2023-02-16 03:30:37.5 16 HD 32633 J0443+3441 3c147 0.61 × 0.67 −14.42 7
2023-02-16 03:53:34.5 16 HD 36526 J0541-0541 3c147 0.66 × 0.79 10.80 7
2023-02-16 02:59:52.5 16 HD 62140 J0805+6144 3c147 0.59 × 0.82 34.40 9
2023-02-16 03:18:49.5 9 HD 65339 J0805+6144 3c147 0.60 × 0.81 34.95 12
2023-02-18 00:18:34.5 9 HD 12767 J0153-3310 3c147 0.60 × 1.52 11.61 11
2023-02-18 00:33:31.5 9 HD 11502 J0152+2207 3c147 0.64 × 0.66 32.78 10
2023-03-15 14:46:28.5 9 HD 168856 J1832-1035 3c286 0.61 × 0.81 12.52 11
2023-03-15 14:59:25.5 16 HD 164224 J1820-2528 3c286 0.59 × 1.22 19.51 13
2023-03-17 09:55:58.5 16 HD 125248 J1432-1801 3c286 0.63 × 1.04 4.02 8
2023-03-17 10:13:55.5 9 HD 130559 J1432-1801 3c286 0.66 × 0.86 6.90 10
2023-04-05 12:19:07.5 16 HD 149822 J1608+1029 3c286 0.63 × 0.73 −87.50 8
2023-04-05 12:42:04.5 9 HD 151346 J1626-2951 3c286 0.68 × 1.31 21.80 11
2023-04-11 12:27:01.5 9 HD 140728 J1500+4751 3c286 0.59 × 0.78 −71.61 10
2023-04-11 12:14:04.5 9 HD 133029 J1549+5038 3c286 0.60 × 0.82 −83.63 10
2023-04-30 02:56:04.5 16 HD 120198 J1419+5423 3c286 0.61 × 0.82 74.67 8
2023-04-30 03:20:58.5 9 HD 103192 J1209-3214 3c286 0.59 × 1.96 −14.34 11
2023-04-30 08:14:28.5 9 HD 345439 J1925+2106 3c286 0.63 × 1.25 −65.60 13
2023-04-30 08:29:55.5 9 HD 152107 J1658+4737 3c286 0.59 × 0.64 22.60 10
2023-05-02 08:29:37.5 16 HD 175132 J1845+4007 3c286 0.63 × 0.74 77.58 8
2023-05-02 08:51:04.5 16 HD 183339 J1927+6117 3c286 0.61 × 0.80 63.81 7

Notes: Array Configuration: B. Code: 23A-002. a Snow accumulation on all dishes. Sensitivity may be degraded. b Snow on Primary estimated to be 15–30% on ALL Antennas. c Approximately 5–10% of dish surface covered in snow. † Strong sidelobe contamination produced by the phase calibrator that is too close to the source sky position.

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