PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-14:43:00
G01     48.3           23.9                7.4 +/-    1.68      14.8 +/-    1.68  0.100 / 0.310
G06     177.5          27.2                9.2 +/-    1.14      17.1 +/-    1.14  0.100 / 0.330
G11     43.6           10.9                7.1 +/-    2.55      19.5 +/-    2.55  0.040 / 0.050
G13     250.5          29.1                8.2 +/-    2.52      14.6 +/-    2.52  0.040 / 0.070
G15     284.0          15.1                6.5 +/-    1.08      16.1 +/-    1.08  0.020 / 0.020
G17     338.6          77.3                8.2 +/-    0.53       8.4 +/-    0.53  0.030 / 0.020
G19     252.6          63.9                8.6 +/-    0.72       9.5 +/-    0.72  0.080 / 0.170
G28     56.2           51.8                8.3 +/-    0.73      10.2 +/-    0.73  0.070 / 0.120
G30     150.8          41.1                8.8 +/-    0.89      12.5 +/-    0.89  0.070 / 0.150