PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/29-12:42:50
G02     205.5          34.6                5.2 +/-    1.15       8.3 +/-    1.15  0.090 / 0.080
G06     150.6          72.9                5.5 +/-    0.57       5.7 +/-    0.57  0.090 / 0.070
G12     310.0          20.2                1.8 +/-    1.51       3.9 +/-    1.51  0.130 / 0.160
G17     40.5           45.3                3.0 +/-    0.79       4.0 +/-    0.79  0.110 / 0.190
G19     357.6          65.2                2.3 +/-    0.53       2.5 +/-    0.53  0.030 / 0.020
G24     291.3          41.4                1.5 +/-    4.20       2.1 +/-    4.20  0.030 / 0.020
G28     105.0          29.9                4.0 +/-    1.69       7.1 +/-    1.69  0.030 / 0.030