PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-14:57:50
G02     336.8          78.0                4.8 +/-    0.73       4.9 +/-    0.73  0.130 / 0.280
G05     166.4          34.0                6.8 +/-    1.71      10.9 +/-    1.71  0.120 / 0.370
G06     42.5           36.8                5.0 +/-    0.78       7.6 +/-    0.78  0.110 / 0.100
G12     303.0          76.6                6.0 +/-    0.61       6.2 +/-    0.61  0.080 / 0.090
G19     75.1           29.2                7.2 +/-    1.78      12.8 +/-    1.78  0.030 / 0.020
G24     223.6          20.0                7.3 +/-    3.96      16.2 +/-    3.96  0.030 / 0.020
G25     316.2          33.9                5.0 +/-    1.43       8.0 +/-    1.43  0.040 / 0.090