PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-15:27:50
G10     262.3          37.0                9.3 +/-    1.91      14.3 +/-    1.91  0.250 / 0.240
G13     44.0           20.7                6.1 +/-    3.39      13.2 +/-    3.39  0.160 / 0.260
G15     62.4           49.8                8.5 +/-    0.82      10.8 +/-    0.82  0.180 / 0.450
G16     282.9          14.2                8.1 +/-    1.51      20.6 +/-    1.51  0.190 / 0.550
G20     293.1          60.0                5.7 +/-    1.16       6.5 +/-    1.16  0.040 / 0.070
G21     353.9          68.5                6.1 +/-    1.58       6.5 +/-    1.58  0.040 / 0.070
G24     126.2          11.2               11.1 +/-    6.70      30.2 +/-    6.70  0.040 / 0.050
G27     320.7          14.9                6.2 +/-    2.82      15.4 +/-    2.82  0.040 / 0.040
G29     166.7          37.7                9.9 +/-    1.29      15.0 +/-    1.29  0.080 / 0.090