PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-00:27:40
G01     235.6          25.4                6.8 +/-    2.02      13.3 +/-    2.02  0.030 / 0.030
G03     307.8          57.6                4.9 +/-    1.70       5.7 +/-    1.70  0.030 / 0.020
G14     76.4           30.7                5.3 +/-    0.73       9.1 +/-    0.73  0.080 / 0.270
G16     160.2          30.2               10.5 +/-    1.42      18.3 +/-    1.42  0.090 / 0.170
G22     264.3          75.2                8.1 +/-    0.70       8.4 +/-    0.70  0.040 / 0.040
G23     297.8          28.1                5.3 +/-    2.27       9.7 +/-    2.27  0.060 / 0.060
G26     123.1          49.2                7.9 +/-    0.78      10.1 +/-    0.78  0.090 / 0.190
G31     40.4           46.3                3.7 +/-    1.33       4.9 +/-    1.33  0.080 / 0.130
G32     89.6           14.8                5.3 +/-    3.17      13.4 +/-    3.17  0.090 / 0.200