PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-20:42:30
G03     238.9          69.0               10.9 +/-    0.64      11.6 +/-    0.64  0.040 / 0.040
G09     302.0          15.9                7.5 +/-    0.96      18.2 +/-    0.96  0.040 / 0.040
G14     98.1           16.3                9.5 +/-    1.47      22.9 +/-    1.47  0.110 / 0.210
G16     133.3          57.4               12.7 +/-    0.42      14.8 +/-    0.42  0.140 / 0.300
G22     195.8          57.3               11.3 +/-    0.47      13.2 +/-    0.47  0.250 / 0.190
G23     318.2          48.0                9.7 +/-    0.83      12.5 +/-    0.83  0.160 / 0.290
G26     72.5           52.7                9.4 +/-    0.92      11.4 +/-    0.92  0.030 / 0.050
G31     51.2           21.2                8.7 +/-    2.54      18.6 +/-    2.54  0.030 / 0.040