PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-16:42:50
G08     311.0          18.9                6.0 +/-    1.75      13.5 +/-    1.75  0.070 / 0.080
G10     326.4          59.2                6.6 +/-    0.53       7.6 +/-    0.53  0.090 / 0.080
G14     216.0          28.0                8.3 +/-    2.23      15.2 +/-    2.23  0.050 / 0.040
G15     46.3           14.6                5.6 +/-    2.23      14.0 +/-    2.23  0.050 / 0.030
G20     31.0           61.6                6.6 +/-    1.13       7.4 +/-    1.13  0.040 / 0.030
G21     130.8          57.2                9.2 +/-    0.73      10.8 +/-    0.73  0.040 / 0.030
G24     73.4           28.3                7.0 +/-    0.86      12.7 +/-    0.86  0.050 / 0.070
G27     282.5          36.9                7.9 +/-    3.28      12.2 +/-    3.28  0.050 / 0.070
G32     220.2          48.0                9.6 +/-    1.69      12.4 +/-    1.69  0.120 / 0.160