PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-14:57:40
G02     205.3          34.7                6.5 +/-    1.76      10.3 +/-    1.76  0.110 / 0.080
G06     145.7          73.4                7.7 +/-    0.88       8.0 +/-    0.88  0.110 / 0.080
G12     310.8          22.3                4.3 +/-    2.59       8.9 +/-    2.59  0.080 / 0.150
G17     40.5           45.3                5.5 +/-    0.39       7.4 +/-    0.39  0.100 / 0.130
G19     358.6          65.2                5.7 +/-    1.44       6.3 +/-    1.44  0.040 / 0.030
G24     292.6          40.7                5.8 +/-    1.02       8.3 +/-    1.02  0.040 / 0.030
G28     105.1          29.4                6.6 +/-    0.83      11.8 +/-    0.83  0.050 / 0.050