PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-23:28:10
G02     260.0          79.7                9.4 +/-    0.44       9.5 +/-    0.44  0.040 / 0.050
G05     169.1          20.9               16.0 +/-    0.99      34.4 +/-    0.99  0.040 / 0.050
G06     40.1           53.2                9.9 +/-    0.50      12.0 +/-    0.50  0.070 / 0.160
G12     321.3          57.2                8.8 +/-    1.69      10.2 +/-    1.69  0.060 / 0.170
G17     73.3           22.3               10.0 +/-    0.89      20.9 +/-    0.89  0.140 / 0.410
G19     60.6           37.1               10.7 +/-    1.08      16.3 +/-    1.08  0.150 / 0.450
G24     240.4          32.1               14.9 +/-    1.41      25.1 +/-    1.41  0.090 / 0.130
G25     317.3          15.5                7.3 +/-    1.79      17.9 +/-    1.79  0.090 / 0.150