PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/29-08:27:50
G01     255.7          37.3                5.0 +/-    1.32       7.7 +/-    1.32  0.100 / 0.080
G03     316.5          40.1                4.6 +/-    1.86       6.7 +/-    1.86  0.080 / 0.100
G11     240.4          14.2                4.4 +/-    1.85      11.2 +/-    1.85  0.030 / 0.050
G14     53.6           45.6                2.0 +/-    0.86       2.7 +/-    0.86  0.030 / 0.050
G18     224.0          30.6                6.0 +/-    0.88      10.4 +/-    0.88  0.050 / 0.080
G22     307.9          64.6                2.2 +/-    0.56       2.4 +/-    0.56  0.050 / 0.090
G25     42.6           12.1                1.3 +/-    0.97       3.5 +/-    0.97  0.130 / 0.270
G26     137.1          35.7                5.7 +/-    0.80       8.9 +/-    0.80  0.190 / 0.260
G31     42.5           59.8                2.8 +/-    0.41       3.2 +/-    0.41  0.130 / 0.220
G32     75.0           23.6                2.9 +/-    0.70       5.9 +/-    0.70  0.160 / 0.310