PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/23-02:57:40
G01     118.5          18.1                5.8 +/-    1.12      13.5 +/-    1.12  0.030 / 0.040
G07     86.2           64.2                4.0 +/-    0.42       4.4 +/-    0.42  0.030 / 0.040
G08     43.9           28.5                0.6 +/-    0.60       1.2 +/-    0.60  0.100 / 0.180
G09     175.6          23.9                5.5 +/-    1.60      11.0 +/-    1.60  0.110 / 0.180
G11     103.5          40.4                5.8 +/-    0.29       8.4 +/-    0.29  0.110 / 0.390
G13     317.2          20.4                3.3 +/-    2.71       7.1 +/-    2.71  0.150 / 0.340
G17     200.6          27.7                6.1 +/-    1.58      11.3 +/-    1.58  0.040 / 0.060
G18     89.8           20.7                5.0 +/-    1.62      10.8 +/-    1.62  0.050 / 0.060
G28     290.2          56.2                4.5 +/-    0.70       5.3 +/-    0.70  0.040 / 0.040
G30     344.6          68.3                1.0 +/-    0.68       1.1 +/-    0.68  0.030 / 0.040