PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-13:28:10
G01     220.8          11.4                6.6 +/-    1.53      17.9 +/-    1.53  0.130 / 0.170
G03     256.8          70.8                8.6 +/-    0.58       9.0 +/-    0.58  0.110 / 0.190
G09     298.9          12.6                3.2 +/-   13.62       8.4 +/-   13.62  0.040 / 0.030
G14     92.0           22.9                8.8 +/-    1.61      18.0 +/-    1.61  0.040 / 0.040
G16     135.6          53.5               10.3 +/-    0.62      12.5 +/-    0.62  0.130 / 0.300
G22     193.5          60.1                9.3 +/-    0.72      10.5 +/-    0.72  0.180 / 0.450
G23     317.1          47.6                7.8 +/-    1.22      10.1 +/-    1.22  0.040 / 0.030
G26     79.0           53.0                8.6 +/-    0.82      10.5 +/-    0.82  0.040 / 0.030
G31     49.3           23.5                6.0 +/-    2.94      12.1 +/-    2.94  0.050 / 0.060