PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-00:57:30
G10     251.9          29.2               13.0 +/-    1.91      23.1 +/-    1.91  0.090 / 0.110
G13     51.6           28.0                8.6 +/-    2.15      15.6 +/-    2.15  0.070 / 0.110
G15     81.7           56.7               12.2 +/-    0.75      14.3 +/-    0.75  0.040 / 0.040
G16     295.4          15.2                6.3 +/-    2.33      15.5 +/-    2.33  0.040 / 0.050
G20     272.1          51.6               12.7 +/-    2.68      15.7 +/-    2.68  0.110 / 0.250
G21     335.9          60.9               10.4 +/-    0.71      11.8 +/-    0.71  0.100 / 0.170
G26     267.5          14.8                8.9 +/-    1.67      22.2 +/-    1.67  0.040 / 0.040
G29     163.3          47.0               12.5 +/-    0.72      16.4 +/-    0.72  0.040 / 0.040