PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-13:12:50
G01     311.4          30.2                5.3 +/-    1.27       9.2 +/-    1.27  0.110 / 0.130
G10     100.3          42.7                5.8 +/-    1.13       8.1 +/-    1.13  0.100 / 0.100
G11     286.4          28.0                1.6 +/-    1.64       2.9 +/-    1.64  0.060 / 0.030
G14     346.5          69.2                3.6 +/-    1.31       3.8 +/-    1.31  0.060 / 0.040
G18     282.0          50.6                8.3 +/-    1.09      10.4 +/-    1.09  0.050 / 0.050
G20     117.1          17.8                6.5 +/-    2.12      15.1 +/-    2.12  0.050 / 0.050
G22     308.7          24.6                3.5 +/-    1.38       6.9 +/-    1.38  0.050 / 0.050
G25     85.6           14.3                6.3 +/-    3.24      16.0 +/-    3.24  0.040 / 0.050
G31     173.6          56.9                5.5 +/-    0.44       6.4 +/-    0.44  0.040 / 0.050
G32     24.1           59.6                3.8 +/-    1.47       4.4 +/-    1.47  0.050 / 0.050