PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-15:58:10
G10     276.0          44.4                7.8 +/-    2.03      10.7 +/-    2.03  0.120 / 0.110
G13     38.7           11.4                5.2 +/-    6.96      14.0 +/-    6.96  0.130 / 0.160
G15     51.5           40.3                5.2 +/-    0.90       7.5 +/-    0.90  0.090 / 0.130
G20     318.6          64.2                9.0 +/-    0.95       9.9 +/-    0.95  0.090 / 0.120
G21     26.3           75.4                8.7 +/-    1.31       9.0 +/-    1.31  0.060 / 0.040
G24     116.2          18.2               11.0 +/-    0.68      25.2 +/-    0.68  0.060 / 0.040
G27     315.1          24.3                6.0 +/-    1.75      12.0 +/-    1.75  0.530 / 0.370
G29     168.1          25.0                9.0 +/-    2.47      17.6 +/-    2.47  0.550 / 0.660
G32     204.6          16.9                9.8 +/-    1.77      23.3 +/-    1.77  0.070 / 0.060