PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/13-12:43:00
G01     317.9          21.2                3.1 +/-    4.38       6.7 +/-    4.38  0.070 / 0.040
G08     253.3          11.6                4.4 +/-    2.08      11.8 +/-    2.08  0.060 / 0.060
G10     85.4           50.3                3.8 +/-    0.60       4.7 +/-    0.60  0.030 / 0.040
G11     298.9          25.1                5.4 +/-    1.56      10.5 +/-    1.56  0.040 / 0.040
G14     310.6          71.7                4.6 +/-    0.62       4.9 +/-    0.62  0.140 / 0.310
G18     298.9          45.3                5.2 +/-    1.00       7.0 +/-    1.00  0.110 / 0.250
G20     108.4          26.4                7.1 +/-    0.71      13.5 +/-    0.71  0.130 / 0.440
G22     303.5          15.7                2.2 +/-    1.27       5.3 +/-    1.27  0.120 / 0.490
G31     177.2          43.7                6.9 +/-    1.58       9.4 +/-    1.58  0.120 / 0.220
G32     4.1            67.6                4.3 +/-    0.82       4.7 +/-    0.82  0.080 / 0.180