PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-14:13:00
G10     267.6          40.2                7.5 +/-    1.12      10.8 +/-    1.12  0.090 / 0.180
G13     41.4           17.0                3.0 +/-    1.60       7.2 +/-    1.60  0.120 / 0.180
G15     56.5           45.4                4.7 +/-    0.51       6.3 +/-    0.51  0.040 / 0.040
G16     278.3          12.8                2.9 +/-    1.23       7.5 +/-    1.23  0.050 / 0.040
G20     304.0          62.4                5.2 +/-    1.20       5.7 +/-    1.20  0.130 / 0.310
G21     6.7            71.9                4.6 +/-    1.09       4.8 +/-    1.09  0.130 / 0.390
G24     122.2          14.1               10.0 +/-    2.93      25.3 +/-    2.93  0.150 / 0.390
G27     318.8          18.9                3.9 +/-    1.94       8.8 +/-    1.94  0.140 / 0.420
G29     167.4          32.4                8.3 +/-    0.80      13.8 +/-    0.80  0.050 / 0.100
G32     203.5          10.4              -11.1 +/-   33.60     -30.6 +/-   33.60  0.040 / 0.080