PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/27-14:12:50
G01     55.4           28.3                5.4 +/-    1.69       9.8 +/-    1.69  0.040 / 0.060
G07     143.1          15.8                6.8 +/-    1.89      16.7 +/-    1.89  0.040 / 0.040
G11     46.5           21.4                6.1 +/-    3.66      13.0 +/-    3.66  0.170 / 0.180
G13     256.8          34.6               10.2 +/-    1.66      16.2 +/-    1.66  0.110 / 0.250
G15     290.3          16.2                7.3 +/-    1.44      17.7 +/-    1.44  0.040 / 0.030
G17     262.9          75.6                9.2 +/-    0.28       9.5 +/-    0.28  0.030 / 0.030
G18     39.4           9.9                 4.9 +/-    2.66      13.7 +/-    2.66  0.080 / 0.090
G19     236.3          55.6                9.3 +/-    2.14      11.0 +/-    2.14  0.080 / 0.070
G28     31.4           58.6                7.5 +/-    0.98       8.6 +/-    0.98  0.120 / 0.700
G30     146.0          47.9                8.5 +/-    0.50      11.0 +/-    0.50  0.090 / 0.580