PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-04:42:40
G08     272.7          20.0                9.0 +/-    2.63      19.8 +/-    2.63  0.160 / 0.340
G10     51.1           60.2                6.8 +/-    0.53       7.7 +/-    0.53  0.420 / 0.350
G14     253.7          60.3                8.6 +/-    0.81       9.7 +/-    0.81  0.150 / 0.190
G18     314.8          27.0                7.1 +/-    2.21      13.2 +/-    2.21  0.140 / 0.210
G20     81.3           51.0               12.4 +/-    0.94      15.5 +/-    0.94  0.080 / 0.270
G21     153.9          21.3                7.4 +/-    1.90      15.8 +/-    1.90  0.270 / 0.310
G24     41.5           12.9                5.4 +/-    2.37      14.2 +/-    2.37  0.040 / 0.050
G27     235.9          19.4                9.8 +/-    4.59      21.9 +/-    4.59  0.040 / 0.050
G31     177.8          26.8                8.8 +/-    1.86      16.4 +/-    1.86  0.150 / 0.190
G32     326.5          76.1                8.3 +/-    0.36       8.5 +/-    0.36  0.120 / 0.210