PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-16:57:40
G02     201.7          23.6               11.0 +/-    1.98      22.1 +/-    1.98  0.200 / 0.320
G06     165.4          60.5               12.5 +/-    0.70      14.2 +/-    0.70  0.230 / 0.410
G12     303.3          11.6                6.5 +/-    5.72      17.7 +/-    5.72  0.130 / 0.350
G13     223.7          10.0               11.3 +/-   11.10      31.5 +/-   11.10  0.130 / 0.270
G17     27.1           56.1                9.0 +/-    0.77      10.6 +/-    0.77  0.050 / 0.120
G19     327.8          69.8                8.9 +/-    0.28       9.4 +/-    0.28  0.040 / 0.140
G24     305.8          33.8               10.0 +/-    1.52      16.2 +/-    1.52  0.080 / 0.160
G28     93.0           37.1                9.8 +/-    0.72      15.0 +/-    0.72  0.100 / 0.240
G30     157.9          11.2               11.5 +/-    2.83      31.2 +/-    2.83  0.110 / 0.120