PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-08:12:40
G10     275.2          43.4                6.9 +/-    1.51       9.5 +/-    1.51  0.030 / 0.030
G13     39.0           12.2                3.6 +/-    2.49       9.6 +/-    2.49  0.030 / 0.030
G15     52.4           42.2                3.8 +/-    0.93       5.4 +/-    0.93  0.080 / 0.050
G20     312.5          63.1                5.5 +/-    0.72       6.0 +/-    0.72  0.090 / 0.060
G21     35.9           75.5                5.6 +/-    0.82       5.8 +/-    0.82  0.210 / 0.210
G24     113.0          18.3                5.4 +/-    1.61      12.4 +/-    1.61  0.240 / 0.500
G27     316.1          22.5                4.3 +/-    1.42       9.0 +/-    1.42  0.110 / 0.280
G29     165.5          19.2                6.1 +/-    1.73      13.7 +/-    1.73  0.570 / 0.470
G32     206.5          11.2               -9.3 +/-   27.80     -25.3 +/-   27.80  0.170 / 0.120