PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/24-08:27:50
G10     274.4          43.0                5.7 +/-    1.34       7.8 +/-    1.34  0.030 / 0.030
G13     39.2           12.7                3.2 +/-    3.49       8.3 +/-    3.49  0.030 / 0.030
G15     52.9           42.7                4.0 +/-    0.77       5.6 +/-    0.77  0.130 / 0.220
G20     311.1          62.9                5.1 +/-    0.77       5.6 +/-    0.77  0.110 / 0.330
G21     34.2           75.3                4.8 +/-    0.60       5.0 +/-    0.60  0.070 / 0.050
G24     113.5          18.0                5.5 +/-    1.47      12.7 +/-    1.47  0.100 / 0.050
G27     316.5          22.0                4.1 +/-    1.79       8.6 +/-    1.79  0.290 / 0.180
G29     165.3          19.5                4.8 +/-    1.64      10.6 +/-    1.64  0.190 / 0.270
G32     206.3          10.8              -13.4 +/-   20.66     -36.8 +/-   20.66  0.160 / 0.130