PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-14:58:00
G01     96.9           29.9               10.6 +/-    0.77      18.5 +/-    0.77  0.020 / 0.040
G07     119.6          50.6               11.5 +/-    0.35      14.4 +/-    0.35  0.030 / 0.030
G08     41.8           12.0                7.6 +/-    3.25      20.2 +/-    3.25  0.070 / 0.110
G11     75.3           41.5               11.6 +/-    0.82      16.5 +/-    0.82  0.080 / 0.130
G13     300.8          33.9               10.6 +/-    1.17      17.1 +/-    1.17  0.040 / 0.080
G17     210.6          47.3               12.5 +/-    0.71      16.3 +/-    0.71  0.040 / 0.050
G18     69.7           24.5                9.5 +/-    0.75      18.8 +/-    0.75  0.030 / 0.060
G19     212.5          19.2               10.0 +/-    1.69      22.5 +/-    1.69  0.030 / 0.060
G28     337.2          61.9                9.5 +/-    0.66      10.6 +/-    0.66  0.040 / 0.100
G30     74.4           79.7               10.7 +/-    0.72      10.9 +/-    0.72  0.050 / 0.090