PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-03:13:10
G07     51.0           68.9                5.8 +/-    1.07       6.1 +/-    1.07  0.100 / 0.170
G08     51.0           39.2                4.1 +/-    0.75       6.1 +/-    0.75  0.120 / 0.130
G09     176.5          36.9                7.7 +/-    1.51      11.8 +/-    1.51  0.120 / 0.290
G11     119.0          34.3                8.1 +/-    1.77      13.0 +/-    1.77  0.110 / 0.260
G17     198.5          14.6                6.6 +/-    4.12      16.6 +/-    4.12  0.030 / 0.030
G18     102.9          15.3                9.2 +/-    1.68      22.7 +/-    1.68  0.030 / 0.030
G23     161.5          12.0                6.1 +/-    1.93      16.3 +/-    1.93  0.090 / 0.160
G27     38.2           11.5                3.4 +/-    2.26       9.1 +/-    2.26  0.380 / 0.220
G28     269.9          49.8                5.4 +/-    2.92       6.8 +/-    2.92  0.030 / 0.030
G30     328.1          57.2                5.1 +/-    0.68       6.0 +/-    0.68  0.030 / 0.030