PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-21:28:10
G02     209.5          50.6               13.6 +/-    0.52      17.1 +/-    0.52  0.070 / 0.100
G06     95.4           79.0               11.9 +/-    0.48      12.1 +/-    0.48  0.110 / 0.100
G12     315.4          28.7                9.6 +/-    1.40      17.3 +/-    1.40  0.060 / 0.070
G17     47.8           40.5                9.5 +/-    1.73      13.7 +/-    1.73  0.050 / 0.050
G19     24.7           56.7               10.8 +/-    0.82      12.7 +/-    0.82  0.030 / 0.030
G24     278.0          42.6                9.8 +/-    0.84      13.8 +/-    0.84  0.030 / 0.020
G28     115.9          20.5               11.7 +/-    0.83      25.5 +/-    0.83  0.040 / 0.040