PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/08-11:57:30
G01     41.1           16.6                2.0 +/-    0.70       4.9 +/-    0.70  0.160 / 0.380
G06     173.8          37.5                5.2 +/-    1.47       7.9 +/-    1.47  0.150 / 0.240
G13     237.9          23.9                2.7 +/-    1.84       5.3 +/-    1.84  0.040 / 0.070
G15     273.9          12.6                3.5 +/-    2.09       9.2 +/-    2.09  0.040 / 0.060
G17     349.1          73.5                3.9 +/-    0.60       4.1 +/-    0.60  0.030 / 0.020
G19     274.0          69.8                3.4 +/-    0.45       3.6 +/-    0.45  0.030 / 0.030
G24     317.3          16.4                2.3 +/-    4.27       5.6 +/-    4.27  0.040 / 0.040
G28     60.9           52.8                3.0 +/-    0.96       3.6 +/-    0.96  0.050 / 0.040
G30     154.5          30.7                5.3 +/-    0.86       9.2 +/-    0.86  0.090 / 0.250