PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/07-15:43:10
G03     239.8          70.0               11.0 +/-    0.68      11.7 +/-    0.68  0.100 / 0.260
G09     300.9          14.6                9.6 +/-    2.60      24.0 +/-    2.60  0.110 / 0.300
G14     95.6           19.6                7.3 +/-    1.30      16.2 +/-    1.30  0.030 / 0.040
G16     131.5          56.4               10.4 +/-    0.42      12.2 +/-    0.42  0.030 / 0.040
G22     191.8          56.7                9.8 +/-    0.96      11.5 +/-    0.96  0.040 / 0.040
G23     319.2          49.3                8.7 +/-    0.33      11.0 +/-    0.33  0.040 / 0.050
G26     73.3           52.2                8.3 +/-    0.92      10.1 +/-    0.92  0.050 / 0.060
G31     50.8           21.0                6.5 +/-    3.70      14.0 +/-    3.70  0.050 / 0.050