PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/09-15:57:50
G01     44.0           20.1                7.4 +/-    2.85      16.3 +/-    2.85  0.060 / 0.070
G06     175.7          32.1               10.3 +/-    2.62      17.2 +/-    2.62  0.040 / 0.060
G13     242.0          26.7               10.8 +/-    2.57      20.4 +/-    2.57  0.110 / 0.410
G15     276.4          14.1                9.1 +/-    2.23      23.1 +/-    2.23  0.130 / 0.410
G17     334.4          76.1                8.2 +/-    0.36       8.4 +/-    0.36  0.020 / 0.020
G19     261.3          66.7                9.7 +/-    0.83      10.5 +/-    0.83  0.030 / 0.030
G24     318.1          13.6               13.6 +/-    1.37      34.9 +/-    1.37  0.040 / 0.040
G28     55.7           53.8                9.0 +/-    1.10      10.8 +/-    1.10  0.040 / 0.050
G30     152.2          32.4                8.7 +/-    0.51      14.6 +/-    0.51  0.090 / 0.270