PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-17:12:30
G01     222.4          13.0               13.4 +/-    2.27      35.1 +/-    2.27  0.040 / 0.040
G03     256.1          72.0               12.0 +/-    0.79      12.6 +/-    0.79  0.030 / 0.030
G14     90.9           22.5                9.1 +/-    1.76      18.9 +/-    1.76  0.110 / 0.220
G16     140.8          50.9               12.9 +/-    0.72      16.1 +/-    0.72  0.090 / 0.230
G22     199.5          64.0               13.0 +/-    0.53      14.3 +/-    0.53  0.130 / 0.120
G23     313.4          43.7               10.7 +/-    1.21      14.7 +/-    1.21  0.090 / 0.090
G26     84.5           54.0               12.7 +/-    1.25      15.3 +/-    1.25  0.040 / 0.050
G31     47.9           26.2                8.4 +/-    1.94      15.9 +/-    1.94  0.040 / 0.050