PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/18-17:13:00
G01     319.2          17.2                4.6 +/-    3.13      10.9 +/-    3.13  0.120 / 0.370
G08     259.4          13.5                8.1 +/-    1.08      21.0 +/-    1.08  0.120 / 0.220
G10     78.0           54.1                6.7 +/-    0.47       8.1 +/-    0.47  0.120 / 0.160
G11     305.2          21.5                3.9 +/-    2.49       8.3 +/-    2.49  0.040 / 0.070
G14     292.8          70.0                6.7 +/-    0.33       7.1 +/-    0.33  0.050 / 0.080
G18     102.1          27.6                7.3 +/-    1.21      13.4 +/-    1.21  0.040 / 0.030
G22     300.2          10.2               -0.9 +/-    8.24      -2.6 +/-    8.24  0.030 / 0.030
G31     176.6          40.9               10.1 +/-    0.82      14.5 +/-    0.82  0.030 / 0.050
G32     5.9            67.9                7.1 +/-    0.52       7.5 +/-    0.52  0.040 / 0.050