PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/30-21:43:10
G03     228.5          65.9                9.0 +/-    0.74       9.8 +/-    0.74  0.090 / 0.460
G07     250.9          11.8                9.3 +/-    5.31      24.9 +/-    5.31  0.090 / 0.360
G09     306.0          22.5                7.4 +/-    3.33      15.2 +/-    3.33  0.040 / 0.050
G14     102.8          11.2                8.4 +/-    2.71      22.7 +/-    2.71  0.050 / 0.050
G16     122.3          61.0               12.3 +/-    0.52      13.9 +/-    0.52  0.040 / 0.040
G22     193.3          51.4               10.5 +/-    1.06      13.1 +/-    1.06  0.050 / 0.040
G23     320.5          50.3                8.7 +/-    0.86      11.0 +/-    0.86  0.100 / 0.580
G26     67.0           52.1                8.9 +/-    0.93      10.9 +/-    0.93  0.110 / 0.560
G31     52.9           20.8                5.1 +/-    1.69      11.1 +/-    1.69  0.040 / 0.050