PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-20:57:40
G03     211.2          57.8               10.2 +/-    1.42      11.8 +/-    1.42  0.050 / 0.070
G07     256.4          14.6               11.2 +/-    1.19      28.1 +/-    1.19  0.050 / 0.060
G09     309.7          26.5                8.2 +/-    1.29      15.4 +/-    1.29  0.200 / 0.320
G16     101.4          65.2               11.3 +/-    0.78      12.3 +/-    0.78  0.220 / 0.320
G22     188.2          42.3               11.8 +/-    0.92      16.6 +/-    0.92  0.070 / 0.270
G23     330.1          59.7                9.3 +/-    0.69      10.6 +/-    0.69  0.070 / 0.270
G26     54.4           44.2                7.9 +/-    0.73      10.7 +/-    0.73  0.030 / 0.030
G27     133.8          10.5               -0.1 +/-   37.84      -0.2 +/-   37.84  0.040 / 0.030
G31     58.9           10.9                7.8 +/-    1.96      21.3 +/-    1.96  0.080 / 0.150