PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-08:28:10
G02     216.9          60.5                8.2 +/-    1.31       9.2 +/-    1.31  0.080 / 0.080
G06     58.0           75.4                4.6 +/-    0.48       4.7 +/-    0.48  0.080 / 0.080
G12     318.5          36.2                3.7 +/-    1.31       5.8 +/-    1.31  0.070 / 0.100
G17     59.4           29.5                3.6 +/-    0.58       6.4 +/-    0.58  0.050 / 0.090
G19     37.4           50.4                4.2 +/-    0.46       5.2 +/-    0.46  0.030 / 0.020
G24     258.1          42.1                6.2 +/-    1.71       8.7 +/-    1.71  0.040 / 0.030
G28     122.5          14.9                8.4 +/-    1.85      20.9 +/-    1.85  0.120 / 0.250