PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-15:13:10
G02     232.8          68.6                8.3 +/-    0.52       8.9 +/-    0.52  0.150 / 0.370
G05     174.7          12.1                7.1 +/-    8.83      19.0 +/-    8.83  0.180 / 0.360
G06     41.6           60.0                7.6 +/-    0.39       8.6 +/-    0.39  0.030 / 0.040
G12     322.4          52.8                6.6 +/-    0.71       8.0 +/-    0.71  0.030 / 0.040
G17     69.3           22.8                7.4 +/-    1.96      15.1 +/-    1.96  0.380 / 0.420
G19     50.1           44.2                8.5 +/-    1.24      11.7 +/-    1.24  0.410 / 0.380
G24     245.3          36.2                9.3 +/-    1.47      14.4 +/-    1.47  0.040 / 0.040
G25     316.1          11.7               -9.4 +/-   28.03     -25.2 +/-   28.03  0.030 / 0.040