PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/31-07:27:40
G10     259.2          34.2                4.6 +/-    2.11       7.4 +/-    2.11  0.030 / 0.040
G13     46.0           23.3                4.5 +/-    2.24       9.2 +/-    2.24  0.040 / 0.030
G15     68.0           53.0                6.0 +/-    0.98       7.3 +/-    0.98  0.090 / 0.090
G16     291.5          13.3                2.3 +/-    1.90       6.0 +/-    1.90  0.100 / 0.060
G20     284.3          56.6                4.8 +/-    2.37       5.6 +/-    2.37  0.130 / 0.340
G21     353.7          68.1                6.4 +/-    0.44       6.8 +/-    0.44  0.140 / 0.280
G24     125.4          9.9               -12.2 +/-   22.87     -34.2 +/-   22.87  0.110 / 0.230
G26     263.2          11.4                3.5 +/-    6.20       9.6 +/-    6.20  0.080 / 0.190
G27     322.1          11.0               -9.5 +/-   23.23     -25.9 +/-   23.23  0.140 / 0.180
G29     163.6          34.5                7.7 +/-    0.39      12.3 +/-    0.39  0.590 / 0.380