PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/16-09:27:30
G03     217.7          60.2                5.9 +/-    1.42       6.7 +/-    1.42  0.050 / 0.060
G07     255.5          13.9                5.8 +/-    6.27      14.8 +/-    6.27  0.070 / 0.080
G09     310.0          28.3                2.9 +/-    1.20       5.2 +/-    1.20  0.090 / 0.260
G16     95.4           63.4                5.8 +/-    0.53       6.4 +/-    0.53  0.100 / 0.330
G22     188.8          43.3                5.7 +/-    0.68       7.9 +/-    0.68  0.030 / 0.040
G23     329.6          59.2                5.1 +/-    1.14       5.8 +/-    1.14  0.040 / 0.040
G26     54.0           42.8                6.1 +/-    1.70       8.5 +/-    1.70  0.040 / 0.040
G31     58.9           9.7                 3.4 +/-    3.69       9.6 +/-    3.69  0.040 / 0.040