PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/08-21:13:00
G10     284.5          48.0                8.8 +/-    1.91      11.3 +/-    1.91  0.060 / 0.030
G15     49.3           38.2                8.9 +/-    1.19      13.3 +/-    1.19  0.060 / 0.040
G20     330.0          64.8                9.2 +/-    0.36      10.1 +/-    0.36  0.040 / 0.070
G21     49.7           77.3               10.0 +/-    0.79      10.3 +/-    0.79  0.040 / 0.060
G24     109.6          22.0                9.9 +/-    1.67      20.9 +/-    1.67  0.090 / 0.260
G27     310.5          28.6                8.7 +/-    0.76      15.8 +/-    0.76  0.180 / 0.190
G29     168.1          17.6               12.3 +/-    0.94      28.8 +/-    0.94  0.110 / 0.090
G32     206.6          22.2               14.9 +/-    1.53      31.1 +/-    1.53  0.110 / 0.080