PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/25-17:43:10
G01     320.5          14.0                6.0 +/-    2.76      15.3 +/-    2.76  0.090 / 0.210
G08     259.6          15.7                7.7 +/-    2.47      18.8 +/-    2.47  0.100 / 0.230
G10     72.4           55.1                7.7 +/-    0.36       9.1 +/-    0.36  0.130 / 0.310
G11     306.2          21.6                5.9 +/-    2.49      12.6 +/-    2.49  0.070 / 0.300
G14     283.5          69.9                7.7 +/-    0.95       8.1 +/-    0.95  0.070 / 0.050
G18     306.8          39.9                8.5 +/-    1.53      12.3 +/-    1.53  0.070 / 0.060
G20     101.2          32.3                8.4 +/-    0.55      14.0 +/-    0.55  0.040 / 0.040
G27     229.9          12.7               10.7 +/-    1.37      28.3 +/-    1.37  0.030 / 0.040
G31     180.4          33.0                8.6 +/-    1.08      14.1 +/-    1.08  0.190 / 0.430
G32     352.9          71.4                8.1 +/-    0.46       8.5 +/-    0.46  0.180 / 0.390