PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/29-18:42:30
G02     202.5          29.4               11.4 +/-    1.09      20.2 +/-    1.09  0.090 / 0.290
G06     161.5          65.7               10.2 +/-    0.46      11.1 +/-    0.46  0.100 / 0.210
G12     305.9          14.3                9.0 +/-    2.98      22.9 +/-    2.98  0.080 / 0.080
G17     30.9           53.2                9.8 +/-    0.71      11.9 +/-    0.71  0.120 / 0.090
G19     344.0          68.2                9.0 +/-    0.53       9.6 +/-    0.53  0.030 / 0.040
G24     301.6          36.5               11.0 +/-    1.95      17.0 +/-    1.95  0.040 / 0.040
G28     98.3           34.0               10.4 +/-    1.15      16.9 +/-    1.15  0.040 / 0.030