PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-11:42:50
G01     40.8           16.1                3.0 +/-    1.50       7.4 +/-    1.50  0.040 / 0.060
G06     173.7          38.2                6.0 +/-    1.15       9.0 +/-    1.15  0.030 / 0.070
G13     237.4          23.5                4.4 +/-    3.74       8.8 +/-    3.74  0.150 / 0.260
G15     272.9          12.4                3.9 +/-    1.28      10.2 +/-    1.28  0.130 / 0.240
G17     351.5          73.0                6.6 +/-    0.65       6.9 +/-    0.65  0.030 / 0.030
G19     276.0          70.1                5.3 +/-    0.54       5.6 +/-    0.54  0.020 / 0.030
G24     317.1          16.9                4.1 +/-    3.34       9.7 +/-    3.34  0.080 / 0.290
G28     61.8           52.6                3.9 +/-    0.97       4.8 +/-    0.97  0.110 / 0.270
G30     154.7          30.3                6.0 +/-    1.32      10.5 +/-    1.32  0.050 / 0.040