PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-07:57:40
G10     267.4          39.3                7.0 +/-    1.05      10.3 +/-    1.05  0.040 / 0.040
G13     41.6           17.5                3.6 +/-    2.68       8.5 +/-    2.68  0.040 / 0.040
G15     58.1           47.6                4.7 +/-    1.12       6.1 +/-    1.12  0.090 / 0.090
G16     284.0          11.6                5.3 +/-    1.63      14.4 +/-    1.63  0.090 / 0.060
G20     298.6          60.5                5.3 +/-    0.67       6.0 +/-    0.67  0.200 / 0.330
G21     12.9           72.8                6.2 +/-    0.77       6.4 +/-    0.77  0.210 / 0.370
G24     118.9          14.5                5.0 +/-    2.38      12.7 +/-    2.38  0.100 / 0.260
G27     319.5          17.4                5.2 +/-    2.01      12.1 +/-    2.01  0.240 / 0.260
G29     164.9          26.0                5.8 +/-    1.61      11.1 +/-    1.61  0.170 / 0.190