PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-16:28:10
G10     288.8          49.8                8.0 +/-    2.94      10.2 +/-    2.94  0.070 / 0.090
G15     47.1           31.8                6.0 +/-    1.33      10.1 +/-    1.33  0.080 / 0.110
G20     342.2          65.5                7.8 +/-    0.64       8.4 +/-    0.64  0.170 / 0.390
G21     68.2           76.6                8.8 +/-    0.63       9.0 +/-    0.63  0.170 / 0.390
G24     107.0          23.5                9.1 +/-    1.42      18.4 +/-    1.42  0.040 / 0.040
G27     307.8          30.8                7.0 +/-    1.08      12.0 +/-    1.08  0.040 / 0.040
G29     168.3          15.3                9.7 +/-    1.53      24.0 +/-    1.53  0.080 / 0.090
G32     207.1          26.3                9.6 +/-    1.61      18.3 +/-    1.61  0.120 / 0.080