PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-18:57:40
G02     213.5          55.0               13.4 +/-    1.04      15.9 +/-    1.04  0.060 / 0.050
G06     66.2           75.8               11.0 +/-    0.36      11.3 +/-    0.36  0.080 / 0.060
G12     318.2          35.5               10.1 +/-    1.88      15.9 +/-    1.88  0.060 / 0.090
G17     54.0           35.1               10.6 +/-    2.04      16.8 +/-    2.04  0.110 / 0.100
G19     31.3           53.6               11.2 +/-    1.24      13.5 +/-    1.24  0.030 / 0.020
G24     269.1          42.5               11.7 +/-    1.81      16.4 +/-    1.81  0.030 / 0.030
G28     120.0          16.5               12.6 +/-    1.46      30.1 +/-    1.46  0.040 / 0.040