PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-17:28:00
G02     200.8          19.1               15.1 +/-    0.98      34.0 +/-    0.98  0.150 / 0.220
G06     168.6          55.0               13.8 +/-    0.88      16.4 +/-    0.88  0.180 / 0.260
G13     227.3          13.2               14.9 +/-    5.53      38.6 +/-    5.53  0.040 / 0.090
G17     21.0           60.3                9.9 +/-    0.30      11.2 +/-    0.30  0.040 / 0.080
G19     312.4          70.4                9.4 +/-    0.69       9.9 +/-    0.69  0.150 / 0.140
G24     309.6          30.4                9.8 +/-    1.21      17.0 +/-    1.21  0.120 / 0.110
G28     87.6           39.9               12.7 +/-    0.41      18.5 +/-    0.41  0.110 / 0.260
G30     157.4          15.5               13.0 +/-    1.28      31.8 +/-    1.28  0.110 / 0.260