PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/28-21:43:00
G01     320.3          14.5                3.8 +/-   18.68       9.6 +/-   18.68  0.130 / 0.420
G08     259.2          15.3                8.9 +/-    2.53      22.1 +/-    2.53  0.100 / 0.300
G10     73.4           54.9                7.9 +/-    0.44       9.4 +/-    0.44  0.170 / 0.270
G11     305.8          21.8                6.8 +/-    1.26      14.4 +/-    1.26  0.280 / 0.480
G14     284.1          69.6               10.6 +/-    0.46      11.3 +/-    0.46  0.030 / 0.050
G18     307.2          39.0               10.4 +/-    1.40      15.4 +/-    1.40  0.040 / 0.050
G20     101.7          32.0               10.2 +/-    0.64      17.2 +/-    0.64  0.080 / 0.210
G27     228.4          11.9               10.2 +/-    2.20      27.2 +/-    2.20  0.070 / 0.220
G31     177.8          36.5               11.8 +/-    2.09      18.2 +/-    2.09  0.140 / 0.360
G32     359.4          70.2                9.1 +/-    0.86       9.6 +/-    0.86  0.120 / 0.280