PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-15:57:30
G01     219.3          10.5                9.9 +/-    2.45      27.3 +/-    2.45  0.200 / 0.360
G03     246.8          71.3                8.5 +/-    0.68       9.0 +/-    0.68  0.230 / 0.310
G09     299.3          13.0                3.1 +/-   20.67       8.1 +/-   20.67  0.040 / 0.040
G14     94.8           17.5                7.8 +/-    1.83      18.2 +/-    1.83  0.030 / 0.040
G16     144.9          51.2               10.8 +/-    0.63      13.5 +/-    0.63  0.100 / 0.220
G22     194.8          59.4                9.8 +/-    0.49      11.1 +/-    0.49  0.100 / 0.290
G23     313.8          43.5                7.6 +/-    0.95      10.5 +/-    0.95  0.060 / 0.050
G26     86.1           56.1                8.2 +/-    0.62       9.7 +/-    0.62  0.040 / 0.050
G31     48.8           26.2                5.5 +/-    3.42      10.4 +/-    3.42  0.150 / 0.260