PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-01:12:40
G01     228.3          18.9                6.3 +/-    2.63      14.2 +/-    2.63  0.020 / 0.030
G03     294.8          64.8                4.8 +/-    0.69       5.3 +/-    0.69  0.020 / 0.020
G14     84.8           25.1                4.7 +/-    1.89       9.2 +/-    1.89  0.200 / 0.340
G16     156.0          39.1                8.9 +/-    0.72      13.1 +/-    0.72  0.190 / 0.390
G22     227.5          73.0                6.4 +/-    0.61       6.7 +/-    0.61  0.080 / 0.050
G23     304.6          34.2                3.5 +/-    1.83       5.6 +/-    1.83  0.040 / 0.060
G26     109.0          54.2                6.9 +/-    0.56       8.3 +/-    0.56  0.050 / 0.080
G31     42.9           38.2                3.2 +/-    1.37       4.8 +/-    1.37  0.050 / 0.090