PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-09:28:10
G01     316.8          22.6                2.6 +/-    2.19       5.4 +/-    2.19  0.040 / 0.060
G08     255.1          10.2                5.4 +/-    3.24      15.1 +/-    3.24  0.040 / 0.060
G10     88.3           49.9                5.1 +/-    1.73       6.5 +/-    1.73  0.080 / 0.130
G11     298.7          24.7                5.5 +/-    2.83      10.7 +/-    2.83  0.080 / 0.150
G14     302.0          69.2                4.6 +/-    1.17       4.9 +/-    1.17  0.080 / 0.180
G18     299.3          43.5                6.1 +/-    1.04       8.4 +/-    1.04  0.090 / 0.180
G22     304.7          18.6                3.7 +/-    2.02       8.5 +/-    2.02  0.030 / 0.040
G25     96.8           11.0               -0.4 +/-   18.34      -1.1 +/-   18.34  0.030 / 0.040
G31     172.1          50.5                6.4 +/-    1.69       8.0 +/-    1.69  0.110 / 0.190
G32     20.7           61.9                3.5 +/-    2.04       3.9 +/-    2.04  0.100 / 0.180