PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/30-17:57:50
G01     314.4          26.7                9.3 +/-    1.16      17.4 +/-    1.16  0.030 / 0.030
G10     95.0           46.0               11.4 +/-    0.60      15.1 +/-    0.60  0.040 / 0.040
G11     291.2          27.4                9.8 +/-    1.18      18.2 +/-    1.18  0.090 / 0.130
G14     333.5          70.6                9.7 +/-    0.62      10.2 +/-    0.62  0.090 / 0.150
G18     288.3          49.5               14.6 +/-    5.53      18.5 +/-    5.53  0.040 / 0.040
G20     113.9          21.2               10.4 +/-    1.26      22.2 +/-    1.26  0.040 / 0.040
G22     306.0          18.2                9.2 +/-    3.90      21.1 +/-    3.90  0.070 / 0.130
G25     86.6           12.5               11.6 +/-    1.38      30.6 +/-    1.38  0.070 / 0.150
G31     177.9          49.9               13.6 +/-    1.32      17.1 +/-    1.32  0.090 / 0.120
G32     22.3           60.7               10.5 +/-    0.96      11.9 +/-    0.96  0.090 / 0.110