PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-16:43:10
G01     40.0           14.6                8.3 +/-    3.14      20.8 +/-    3.14  0.090 / 0.140
G06     172.6          43.3               10.4 +/-    0.97      14.4 +/-    0.97  0.140 / 0.150
G13     235.4          20.4               11.4 +/-    3.35      24.9 +/-    3.35  0.150 / 0.150
G15     271.2          11.1               10.5 +/-    2.41      28.6 +/-    2.41  0.140 / 0.150
G17     6.1            68.6               10.6 +/-    0.47      11.3 +/-    0.47  0.310 / 0.380
G19     278.4          67.9               11.7 +/-    0.78      12.5 +/-    0.78  0.220 / 0.440
G24     315.2          22.3               10.0 +/-    3.09      20.7 +/-    3.09  0.060 / 0.070
G28     74.7           45.7                9.9 +/-    0.66      13.2 +/-    0.66  0.050 / 0.050
G30     155.5          25.9               10.3 +/-    1.43      19.8 +/-    1.43  0.130 / 0.400