PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/07-18:57:50
G02     12.9           68.8                8.6 +/-    0.70       9.1 +/-    0.70  0.040 / 0.050
G05     156.4          48.3               12.6 +/-    0.93      16.2 +/-    0.93  0.040 / 0.060
G06     47.3           25.3                9.1 +/-    1.65      17.7 +/-    1.65  0.020 / 0.030
G12     221.2          79.7                8.3 +/-    0.74       8.5 +/-    0.74  0.030 / 0.030
G19     86.7           21.2                9.7 +/-    0.97      20.7 +/-    0.97  0.080 / 0.090
G24     216.4          12.0               12.7 +/-    2.64      34.0 +/-    2.64  0.040 / 0.080
G25     311.5          43.0                9.4 +/-    2.47      13.0 +/-    2.47  0.090 / 0.380
G29     296.4          16.7                9.2 +/-    1.72      21.9 +/-    1.72  0.090 / 0.410