PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-08:28:00
G01     222.7          13.4                4.9 +/-    2.69      12.5 +/-    2.69  0.030 / 0.050
G03     273.9          69.3                5.5 +/-    0.53       5.8 +/-    0.53  0.030 / 0.040
G09     297.8          12.5                6.2 +/-    3.27      16.2 +/-    3.27  0.100 / 0.230
G14     90.3           22.9                3.4 +/-    0.91       7.0 +/-    0.91  0.110 / 0.270
G16     137.7          51.1                7.4 +/-    1.08       9.1 +/-    1.08  0.180 / 0.450
G22     204.8          65.6                6.0 +/-    1.16       6.5 +/-    1.16  0.210 / 0.430
G23     312.0          42.0                5.6 +/-    0.86       7.8 +/-    0.86  0.040 / 0.060
G26     83.8           53.4                6.1 +/-    0.52       7.4 +/-    0.52  0.050 / 0.070
G31     48.0           25.7                4.1 +/-    0.76       7.8 +/-    0.76  0.030 / 0.050