PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/12-18:12:40
G03     204.1          53.4               11.3 +/-    0.97      13.7 +/-    0.97  0.050 / 0.080
G07     258.7          16.2                9.0 +/-    3.06      21.8 +/-    3.06  0.120 / 0.120
G09     311.1          29.0                9.1 +/-    1.14      16.3 +/-    1.14  0.190 / 0.210
G16     89.1           64.6               13.2 +/-    0.69      14.5 +/-    0.69  0.270 / 0.250
G22     185.5          37.6               10.4 +/-    1.76      15.7 +/-    1.76  0.050 / 0.040
G23     335.6          63.9               11.4 +/-    0.88      12.5 +/-    0.88  0.060 / 0.040
G27     131.7          12.4               11.9 +/-    2.33      31.5 +/-    2.33  0.060 / 0.040