PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-15:27:30
G10     275.4          43.2                6.9 +/-    1.77       9.6 +/-    1.77  0.030 / 0.040
G13     39.0           12.2                4.4 +/-    0.99      11.8 +/-    0.99  0.030 / 0.050
G15     53.4           44.2                4.5 +/-    0.73       6.1 +/-    0.73  0.050 / 0.080
G20     312.9          63.1                7.0 +/-    0.73       7.8 +/-    0.73  0.060 / 0.060
G21     38.5           75.6                6.1 +/-    1.08       6.2 +/-    1.08  0.120 / 0.210
G24     109.7          18.7                9.0 +/-    1.33      20.5 +/-    1.33  0.110 / 0.220
G27     316.1          22.3                4.0 +/-    1.26       8.4 +/-    1.26  0.160 / 0.340
G29     167.5          22.3                8.9 +/-    0.79      18.5 +/-    0.79  0.230 / 0.400
G32     205.6          15.1                8.6 +/-    4.30      21.2 +/-    4.30  0.090 / 0.140