PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/22-21:27:40
G03     211.1          57.4               11.2 +/-    0.94      13.0 +/-    0.94  0.040 / 0.070
G07     256.9          15.0               11.4 +/-    1.76      28.3 +/-    1.76  0.040 / 0.060
G09     310.0          27.1                7.0 +/-    1.83      13.1 +/-    1.83  0.050 / 0.050
G16     100.5          65.4               13.0 +/-    0.60      14.1 +/-    0.60  0.050 / 0.050
G22     188.3          41.9               11.8 +/-    0.91      16.6 +/-    0.91  0.080 / 0.190
G23     330.4          60.0                9.4 +/-    0.70      10.7 +/-    0.70  0.070 / 0.180
G26     54.0           43.9                9.1 +/-    0.89      12.5 +/-    0.89  0.140 / 0.290
G27     133.3          10.9                2.0 +/-   38.16       5.5 +/-   38.16  0.100 / 0.340
G31     59.1           10.7                9.4 +/-    1.98      25.9 +/-    1.98  0.060 / 0.170