PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-22:57:50
G10     250.7          27.0               15.3 +/-    1.91      28.6 +/-    1.91  0.050 / 0.040
G13     53.3           29.6               11.4 +/-    2.05      20.1 +/-    2.05  0.040 / 0.050
G15     91.6           59.1               14.0 +/-    0.90      16.0 +/-    0.90  0.160 / 0.320
G16     293.8          16.0               11.9 +/-    1.87      28.9 +/-    1.87  0.160 / 0.290
G20     255.6          23.5                9.3 +/-    3.17      18.9 +/-    3.17  0.060 / 0.150
G21     332.5          59.6               12.0 +/-    0.43      13.7 +/-    0.43  0.080 / 0.150
G26     266.0          15.6               13.9 +/-    2.60      34.1 +/-    2.60  0.040 / 0.030
G29     165.3          51.0               14.1 +/-    0.62      17.6 +/-    0.62  0.040 / 0.030