PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-14:58:10
G08     319.5          12.5                4.2 +/-    2.11      11.0 +/-    2.11  0.050 / 0.030
G10     306.0          54.7                4.9 +/-    1.03       5.9 +/-    1.03  0.040 / 0.030
G14     211.3          17.1                6.3 +/-    1.50      15.0 +/-    1.50  0.030 / 0.040
G15     45.7           24.1                3.5 +/-    1.63       6.9 +/-    1.63  0.030 / 0.030
G20     5.3            64.8                4.6 +/-    0.50       5.1 +/-    0.50  0.160 / 0.260
G21     114.3          66.5                5.6 +/-    0.72       6.1 +/-    0.72  0.140 / 0.220
G24     87.6           27.4                7.0 +/-    1.55      12.9 +/-    1.55  0.160 / 0.270
G27     297.4          34.5                5.3 +/-    4.42       8.4 +/-    4.42  0.130 / 0.260
G32     213.0          35.7                6.6 +/-    1.93      10.3 +/-    1.93  0.080 / 0.110