PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-10:27:50
G01     41.0           16.4                4.1 +/-    2.94       9.7 +/-    2.94  0.290 / 0.390
G06     173.7          37.6                5.8 +/-    2.07       8.8 +/-    2.07  0.160 / 0.270
G13     237.8          23.9                6.3 +/-    1.67      12.6 +/-    1.67  0.210 / 0.260
G15     272.5          12.7                4.2 +/-    1.85      11.1 +/-    1.85  0.130 / 0.220
G17     352.6          73.0                5.0 +/-    0.42       5.2 +/-    0.42  0.070 / 0.080
G19     274.4          70.0                4.1 +/-    0.55       4.3 +/-    0.55  0.070 / 0.080
G24     317.3          16.2                2.8 +/-    1.87       6.7 +/-    1.87  0.040 / 0.030
G28     60.4           53.1                4.6 +/-    1.00       5.6 +/-    1.00  0.040 / 0.030
G30     154.7          31.5                5.2 +/-    1.52       8.8 +/-    1.52  0.080 / 0.100