PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-15:13:10
G02     202.2          23.8               11.1 +/-    1.82      22.3 +/-    1.82  0.190 / 0.310
G06     163.8          62.0               10.8 +/-    0.72      12.1 +/-    0.72  0.170 / 0.410
G12     304.3          13.4                7.1 +/-    1.98      18.4 +/-    1.98  0.050 / 0.040
G17     29.7           54.2                8.4 +/-    0.52      10.1 +/-    0.52  0.050 / 0.040
G19     329.2          69.6                8.1 +/-    0.73       8.6 +/-    0.73  0.110 / 0.240
G24     304.6          34.9                8.8 +/-    0.99      14.1 +/-    0.99  0.080 / 0.210
G28     94.0           36.5                8.1 +/-    0.52      12.5 +/-    0.52  0.050 / 0.040
G30     158.2          10.8               11.7 +/-    3.92      32.0 +/-    3.92  0.060 / 0.050