PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/30-17:28:10
G01     319.9          16.1                7.1 +/-    1.39      17.1 +/-    1.39  0.140 / 0.290
G08     257.5          14.5                9.0 +/-    1.63      22.8 +/-    1.63  0.120 / 0.270
G10     76.5           53.8               10.7 +/-    0.43      12.9 +/-    0.43  0.040 / 0.040
G11     304.1          22.8                7.8 +/-    1.28      15.9 +/-    1.28  0.040 / 0.030
G14     291.1          70.7               11.1 +/-    0.65      11.7 +/-    0.65  0.090 / 0.170
G18     304.5          41.9               10.5 +/-    0.67      14.9 +/-    0.67  0.070 / 0.250
G20     103.4          30.6               11.3 +/-    1.35      19.5 +/-    1.35  0.050 / 0.050
G27     228.2          11.1                8.3 +/-    2.43      22.8 +/-    2.43  0.040 / 0.040
G31     180.2          35.4               15.6 +/-    0.96      24.6 +/-    0.96  0.140 / 0.270
G32     358.7          69.9               10.7 +/-    0.62      11.4 +/-    0.62  0.140 / 0.260