PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/25-14:42:30
G02     202.5          24.2                8.4 +/-    2.31      16.7 +/-    2.31  0.080 / 0.120
G06     162.8          62.9                9.8 +/-    1.04      10.9 +/-    1.04  0.070 / 0.120
G12     304.9          14.2                5.8 +/-    1.77      14.7 +/-    1.77  0.050 / 0.040
G17     30.9           53.3                8.2 +/-    0.72      10.0 +/-    0.72  0.040 / 0.040
G19     331.0          69.4                6.9 +/-    0.86       7.3 +/-    0.86  0.100 / 0.190
G24     303.8          35.4                7.8 +/-    0.76      12.4 +/-    0.76  0.110 / 0.220
G28     94.8           36.1                6.6 +/-    0.80      10.2 +/-    0.80  0.050 / 0.030