PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/16-16:27:50
G08     310.5          19.2                4.4 +/-    1.14      10.0 +/-    1.14  0.050 / 0.050
G10     327.6          59.4                4.3 +/-    0.31       4.9 +/-    0.31  0.040 / 0.030
G14     216.3          28.7                6.3 +/-    1.61      11.3 +/-    1.61  0.080 / 0.100
G15     46.4           13.9                4.6 +/-    2.16      11.8 +/-    2.16  0.060 / 0.100
G20     32.3           61.4                4.1 +/-    0.67       4.6 +/-    0.67  0.180 / 0.230
G21     131.5          56.4                6.8 +/-    0.37       8.0 +/-    0.37  0.130 / 0.220
G24     72.8           28.3                5.1 +/-    1.17       9.3 +/-    1.17  0.040 / 0.020
G27     281.8          36.8                5.0 +/-    1.70       7.7 +/-    1.70  0.040 / 0.030
G32     220.6          48.5                5.8 +/-    1.74       7.5 +/-    1.74  0.070 / 0.060