PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-15:12:50
G02     202.1          23.3               11.2 +/-    2.21      22.7 +/-    2.21  0.280 / 0.560
G06     164.2          61.5               10.9 +/-    0.57      12.2 +/-    0.57  0.420 / 0.540
G12     304.0          13.0                8.5 +/-    2.88      22.0 +/-    2.88  0.110 / 0.120
G17     29.3           54.6                9.4 +/-    1.12      11.2 +/-    1.12  0.080 / 0.150
G19     327.8          69.7                8.5 +/-    0.41       9.0 +/-    0.41  0.220 / 0.300
G24     305.0          34.6                9.1 +/-    2.29      14.6 +/-    2.29  0.080 / 0.200
G28     93.5           36.8                9.3 +/-    1.04      14.3 +/-    1.04  0.050 / 0.030
G30     158.2          11.2               10.4 +/-    2.97      28.4 +/-    2.97  0.050 / 0.040