PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/06-13:57:40
G02     203.5          24.7                8.9 +/-    2.03      17.6 +/-    2.03  0.070 / 0.240
G06     163.1          64.3                8.5 +/-    0.69       9.4 +/-    0.69  0.110 / 0.220
G12     305.6          14.7                3.8 +/-    2.10       9.6 +/-    2.10  0.070 / 0.090
G17     32.2           52.2                7.0 +/-    0.98       8.6 +/-    0.98  0.060 / 0.060
G19     334.6          68.8                7.1 +/-    0.49       7.6 +/-    0.49  0.030 / 0.030
G24     301.5          37.0                5.6 +/-    0.82       8.5 +/-    0.82  0.030 / 0.030
G28     96.7           35.3                9.4 +/-    1.15      14.8 +/-    1.15  0.040 / 0.030