PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-14:43:00
G01     102.5          26.9                8.8 +/-    0.77      16.6 +/-    0.77  0.040 / 0.060
G07     114.0          51.0                9.7 +/-    0.88      12.1 +/-    0.88  0.040 / 0.050
G08     41.8           19.1                7.9 +/-    2.17      17.9 +/-    2.17  0.070 / 0.100
G09     174.7          11.7                9.1 +/-    2.20      24.4 +/-    2.20  0.080 / 0.080
G11     83.3           43.4               10.1 +/-    1.13      13.9 +/-    1.13  0.030 / 0.050
G13     306.1          31.8                8.6 +/-    0.81      14.4 +/-    0.81  0.030 / 0.060
G17     207.0          39.2               11.1 +/-    0.71      16.4 +/-    0.71  0.090 / 0.150
G18     75.2           24.4                9.4 +/-    1.13      18.6 +/-    1.13  0.090 / 0.140
G28     313.3          59.5                8.1 +/-    1.20       9.2 +/-    1.20  0.220 / 0.440
G30     54.7           79.1                8.7 +/-    0.64       8.9 +/-    0.64  0.240 / 0.470