PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-15:13:00
G08     319.0          13.0                2.2 +/-    1.66       5.8 +/-    1.66  0.030 / 0.050
G10     307.2          55.0                4.4 +/-    0.92       5.2 +/-    0.92  0.030 / 0.040
G14     211.6          17.8                6.1 +/-    1.66      14.1 +/-    1.66  0.070 / 0.140
G15     45.7           23.6                2.7 +/-    0.43       5.5 +/-    0.43  0.070 / 0.120
G20     7.1            64.6                5.4 +/-    0.58       5.9 +/-    0.58  0.110 / 0.310
G21     115.6          66.0                5.3 +/-    0.94       5.7 +/-    0.94  0.130 / 0.350
G24     86.6           27.6                8.8 +/-    1.19      16.3 +/-    1.19  0.060 / 0.050
G27     296.5          34.8                5.3 +/-    1.16       8.5 +/-    1.16  0.040 / 0.040
G32     213.4          36.5                6.2 +/-    1.54       9.5 +/-    1.54  0.080 / 0.100