PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/19-15:12:30
G03     221.6          64.7               11.4 +/-    1.12      12.5 +/-    1.12  0.110 / 0.230
G09     305.6          20.7                8.9 +/-    1.79      19.3 +/-    1.79  0.110 / 0.280
G14     102.0          14.8                8.4 +/-    1.48      20.9 +/-    1.48  0.040 / 0.060
G16     115.2          61.9               12.0 +/-    0.46      13.4 +/-    0.46  0.050 / 0.070
G22     186.9          47.4               12.4 +/-    1.81      16.2 +/-    1.81  0.030 / 0.060
G23     326.9          56.4                8.6 +/-    0.64      10.1 +/-    0.64  0.030 / 0.060
G26     61.4           47.9                9.1 +/-    0.49      11.8 +/-    0.49  0.050 / 0.040
G31     55.0           14.7                8.0 +/-    3.57      20.1 +/-    3.57  0.050 / 0.040