PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/17-01:28:00
G10     306.9          55.2                8.4 +/-    1.06      10.0 +/-    1.06  0.040 / 0.040
G14     211.3          15.7               12.4 +/-    1.46      30.3 +/-    1.46  0.040 / 0.040
G15     45.6           23.0                6.7 +/-    2.03      13.6 +/-    2.03  0.060 / 0.080
G20     3.7            64.8                9.5 +/-    0.59      10.4 +/-    0.59  0.070 / 0.060
G21     109.4          71.3               11.4 +/-    0.33      12.0 +/-    0.33  0.040 / 0.050
G24     92.7           28.3                9.6 +/-    0.79      17.5 +/-    0.79  0.070 / 0.060
G27     295.6          35.9                9.3 +/-    2.46      14.6 +/-    2.46  0.130 / 0.430
G32     212.7          35.6               12.0 +/-    1.84      18.8 +/-    1.84  0.170 / 0.280