PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/12-23:57:40
G01     318.5          18.9                8.7 +/-    2.14      19.7 +/-    2.14  0.030 / 0.040
G08     255.2          12.5               12.8 +/-    1.01      33.7 +/-    1.01  0.030 / 0.040
G10     80.7           53.4                7.5 +/-    0.84       9.1 +/-    0.84  0.080 / 0.250
G11     301.3          24.5               10.1 +/-    1.68      19.9 +/-    1.68  0.120 / 0.390
G14     304.5          71.4                7.7 +/-    0.75       8.1 +/-    0.75  0.040 / 0.070
G18     102.8          28.0                9.9 +/-    0.78      18.0 +/-    0.78  0.060 / 0.060
G22     300.8          10.5               -1.3 +/-    8.09      -3.5 +/-    8.09  0.130 / 0.220
G31     179.0          40.2               13.3 +/-    1.43      19.2 +/-    1.43  0.160 / 0.230
G32     1.7            68.4                7.8 +/-    0.66       8.4 +/-    0.66  0.030 / 0.030