PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/09-10:57:50
G01     316.8          23.4                4.8 +/-    1.59       9.7 +/-    1.59  0.070 / 0.190
G10     88.9           48.6                5.4 +/-    1.49       7.0 +/-    1.49  0.080 / 0.160
G11     296.5          25.8                6.6 +/-    2.12      12.6 +/-    2.12  0.130 / 0.270
G14     318.5          71.6                5.6 +/-    0.88       5.8 +/-    0.88  0.110 / 0.250
G18     296.5          46.3                6.0 +/-    7.36       7.9 +/-    7.36  0.040 / 0.060
G20     110.4          24.6                5.1 +/-    2.11      10.1 +/-    2.11  0.040 / 0.050
G22     305.1          19.2                4.3 +/-    1.43       9.5 +/-    1.43  0.040 / 0.040
G25     95.1           10.7                3.9 +/-    4.70      10.7 +/-    4.70  0.050 / 0.040
G31     175.4          47.5                7.8 +/-    0.67      10.2 +/-    0.67  0.210 / 0.310