PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/30-21:13:00
G10     264.6          38.1               16.0 +/-    1.85      24.0 +/-    1.85  0.040 / 0.040
G13     42.7           19.1               11.0 +/-    2.77      24.8 +/-    2.77  0.040 / 0.040
G15     62.7           51.4               14.5 +/-    0.77      18.0 +/-    0.77  0.100 / 0.510
G16     281.3          13.4               14.1 +/-    3.28      36.3 +/-    3.28  0.180 / 0.400
G20     293.9          59.4               14.4 +/-    0.85      16.4 +/-    0.85  0.030 / 0.040
G21     355.3          69.5               15.0 +/-    0.81      15.9 +/-    0.81  0.040 / 0.050
G24     124.0          12.6               16.1 +/-    2.44      42.5 +/-    2.44  0.160 / 0.460
G27     320.0          16.4               12.8 +/-    1.68      30.9 +/-    1.68  0.120 / 0.370
G29     166.8          34.4               17.6 +/-    0.99      28.3 +/-    0.99  0.110 / 0.100