PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/29-19:57:40
G02     221.1          64.2               10.7 +/-    1.08      11.8 +/-    1.08  0.030 / 0.060
G06     47.9           68.3                9.8 +/-    0.51      10.5 +/-    0.51  0.040 / 0.050
G12     320.7          43.1                8.9 +/-    0.92      12.3 +/-    0.92  0.060 / 0.080
G17     61.0           30.1                8.3 +/-    1.70      14.6 +/-    1.70  0.060 / 0.110
G19     42.5           47.9                9.4 +/-    1.15      12.2 +/-    1.15  0.050 / 0.070
G24     257.5          40.2               11.2 +/-    3.57      16.3 +/-    3.57  0.060 / 0.110
G28     125.8          9.9                12.8 +/-    2.66      35.9 +/-    2.66  0.040 / 0.060