PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/21-21:57:40
G08     299.3          21.6               10.7 +/-    1.00      22.6 +/-    1.00  0.050 / 0.080
G10     4.1            62.6               11.2 +/-    0.56      12.4 +/-    0.56  0.050 / 0.070
G14     226.2          40.7               13.2 +/-    1.70      18.9 +/-    1.70  0.130 / 0.100
G20     62.0           53.1               11.3 +/-    0.96      13.7 +/-    0.96  0.090 / 0.130
G21     145.1          44.6               12.3 +/-    0.53      16.6 +/-    0.53  0.030 / 0.030
G24     60.5           27.7                9.4 +/-    1.73      17.3 +/-    1.73  0.030 / 0.020
G27     258.3          33.8               13.8 +/-    1.43      22.5 +/-    1.43  0.070 / 0.090
G32     239.1          65.6               12.6 +/-    0.65      13.7 +/-    0.65  0.060 / 0.100