PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/17-09:12:30
G02     203.4          32.4                7.0 +/-    2.42      11.7 +/-    2.42  0.060 / 0.080
G06     161.8          67.8                8.0 +/-    0.93       8.5 +/-    0.93  0.060 / 0.090
G12     307.0          15.0                2.3 +/-    3.22       5.7 +/-    3.22  0.110 / 0.330
G17     37.4           47.7                4.1 +/-    0.32       5.3 +/-    0.32  0.260 / 0.350
G19     351.3          66.9                4.4 +/-    0.94       4.7 +/-    0.94  0.040 / 0.030
G24     295.0          40.6                5.1 +/-    0.69       7.3 +/-    0.69  0.030 / 0.030
G28     100.6          33.3                7.1 +/-    1.07      11.7 +/-    1.07  0.040 / 0.040