PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-05:58:00
G02     211.3          57.2                7.2 +/-    1.35       8.4 +/-    1.35  0.070 / 0.110
G06     90.7           80.8                4.3 +/-    0.41       4.4 +/-    0.41  0.080 / 0.090
G12     316.5          30.0                4.4 +/-    1.28       7.7 +/-    1.28  0.040 / 0.040
G17     53.0           36.1                4.0 +/-    0.84       6.2 +/-    0.84  0.050 / 0.050
G19     34.3           52.0                3.9 +/-    0.46       4.8 +/-    0.46  0.040 / 0.070
G24     273.7          42.1                3.7 +/-    0.90       5.3 +/-    0.90  0.040 / 0.080
G28     119.5          16.7                6.7 +/-    2.36      16.1 +/-    2.36  0.050 / 0.070