PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/17-01:42:50
G01     44.7           20.9                3.5 +/-    3.43       7.6 +/-    3.43  0.040 / 0.040
G06     179.5          28.0                7.0 +/-    0.78      12.8 +/-    0.78  0.040 / 0.040
G13     242.8          26.7                5.7 +/-    2.55      10.6 +/-    2.55  0.080 / 0.170
G15     276.9          14.2                2.6 +/-    1.47       6.7 +/-    1.47  0.080 / 0.170
G17     353.0          74.3                5.3 +/-    0.59       5.5 +/-    0.59  0.290 / 0.200
G19     258.4          64.5                6.3 +/-    0.42       6.9 +/-    0.42  0.300 / 0.310
G24     317.4          16.1                2.7 +/-    0.98       6.5 +/-    0.98  0.030 / 0.030
G28     58.7           52.2                4.3 +/-    0.35       5.3 +/-    0.35  0.040 / 0.030
G30     152.7          34.6                6.3 +/-    1.74      10.1 +/-    1.74  0.090 / 0.140