PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/16-12:12:50
G01     320.4          14.6                2.1 +/-    1.11       5.2 +/-    1.11  0.140 / 0.250
G08     260.3          15.6                4.6 +/-    3.92      11.2 +/-    3.92  0.110 / 0.210
G10     73.2           54.6                4.0 +/-    1.14       4.8 +/-    1.14  0.030 / 0.030
G11     306.1          21.5                3.4 +/-    1.91       7.2 +/-    1.91  0.040 / 0.030
G14     284.7          70.2                3.0 +/-    1.15       3.2 +/-    1.15  0.110 / 0.260
G18     307.0          39.6                3.7 +/-    1.05       5.4 +/-    1.05  0.090 / 0.280
G20     101.6          32.0                4.5 +/-    0.74       7.6 +/-    0.74  0.030 / 0.020
G27     229.0          12.4                4.4 +/-    2.27      11.7 +/-    2.27  0.030 / 0.020
G31     178.7          35.1                6.0 +/-    0.54       9.6 +/-    0.54  0.250 / 0.200
G32     343.2          72.3                4.4 +/-    0.52       4.6 +/-    0.52  0.150 / 0.370