PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-16:58:00
G01     40.3           15.4                8.2 +/-    1.85      20.2 +/-    1.85  0.130 / 0.280
G06     174.5          39.0               13.8 +/-    1.62      20.4 +/-    1.62  0.130 / 0.300
G13     236.1          22.3               13.5 +/-    2.10      28.0 +/-    2.10  0.040 / 0.090
G15     270.0          12.1               13.3 +/-    1.79      35.5 +/-    1.79  0.040 / 0.070
G17     356.9          71.5               10.4 +/-    0.65      10.9 +/-    0.65  0.110 / 0.300
G19     279.9          70.3               10.9 +/-    0.60      11.5 +/-    0.60  0.100 / 0.370
G24     316.3          19.3                9.8 +/-    1.34      22.0 +/-    1.34  0.030 / 0.040
G28     66.1           50.9               10.5 +/-    0.39      13.1 +/-    0.39  0.030 / 0.040
G30     154.0          25.1               12.6 +/-    1.14      24.5 +/-    1.14  0.040 / 0.040