PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-08:57:50
G01     222.2          13.0                6.9 +/-    3.79      18.0 +/-    3.79  0.030 / 0.050
G03     271.3          69.5                6.0 +/-    0.47       6.4 +/-    0.47  0.030 / 0.050
G09     298.1          12.7                8.0 +/-    3.69      21.0 +/-    3.69  0.100 / 0.240
G14     90.7           22.8                4.1 +/-    0.76       8.4 +/-    0.76  0.100 / 0.270
G16     137.1          51.7                8.8 +/-    1.06      10.8 +/-    1.06  0.040 / 0.050
G22     203.1          64.8                9.2 +/-    0.64      10.1 +/-    0.64  0.030 / 0.050
G23     312.7          42.8                5.8 +/-    0.85       8.1 +/-    0.85  0.120 / 0.370
G26     82.7           53.3                6.3 +/-    0.71       7.7 +/-    0.71  0.140 / 0.340
G31     48.3           25.2                4.2 +/-    1.63       8.2 +/-    1.63  0.040 / 0.060