PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-19:42:30
G03     221.5          64.7               10.5 +/-    1.36      11.5 +/-    1.36  0.060 / 0.060
G09     305.5          20.3                9.3 +/-    0.85      20.3 +/-    0.85  0.060 / 0.060
G14     102.8          12.8               10.4 +/-    2.83      27.4 +/-    2.83  0.040 / 0.040
G16     120.1          61.9               13.2 +/-    0.62      14.7 +/-    0.62  0.040 / 0.040
G22     191.0          50.3               11.6 +/-    0.76      14.6 +/-    0.76  0.210 / 0.250
G23     323.7          53.5               10.7 +/-    0.69      13.0 +/-    0.69  0.120 / 0.250
G26     62.8           49.2                9.4 +/-    0.81      12.0 +/-    0.81  0.120 / 0.430
G31     54.6           16.1                7.6 +/-    2.12      18.4 +/-    2.12  0.160 / 0.330