PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/12-10:42:40
G01     317.3          22.4                3.5 +/-    2.06       7.2 +/-    2.06  0.130 / 0.170
G08     252.9          11.0                6.4 +/-    2.55      17.4 +/-    2.55  0.200 / 0.160
G10     87.2           49.4                4.6 +/-    1.28       5.9 +/-    1.28  0.050 / 0.050
G11     297.8          25.4                4.6 +/-    1.09       9.0 +/-    1.09  0.050 / 0.050
G14     314.3          71.6                4.4 +/-    0.76       4.7 +/-    0.76  0.030 / 0.020
G18     298.0          45.5                6.1 +/-    3.79       8.1 +/-    3.79  0.040 / 0.030
G20     109.5          25.5                5.5 +/-    1.34      10.7 +/-    1.34  0.030 / 0.030
G25     96.3           10.1               -3.1 +/-   28.26      -8.5 +/-   28.26  0.040 / 0.040
G31     175.7          46.2                8.3 +/-    0.74      11.0 +/-    0.74  0.350 / 0.490
G32     3.4            67.6                4.5 +/-    0.77       4.9 +/-    0.77  0.230 / 0.380