PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-18:28:00
G02     201.4          24.4               12.4 +/-    3.06      24.6 +/-    3.06  0.070 / 0.110
G06     165.9          60.3               13.7 +/-    0.74      15.5 +/-    0.74  0.080 / 0.090
G12     303.1          10.7               -2.0 +/-   23.25      -5.5 +/-   23.25  0.210 / 0.370
G13     223.8          10.0                9.0 +/-   24.06      25.0 +/-   24.06  0.200 / 0.450
G17     25.8           56.9               10.8 +/-    0.47      12.7 +/-    0.47  0.110 / 0.360
G19     329.5          69.8               10.4 +/-    0.55      11.0 +/-    0.55  0.120 / 0.380
G24     306.0          33.6               11.5 +/-    1.70      18.8 +/-    1.70  0.210 / 0.760
G28     93.1           37.0               11.6 +/-    0.84      17.8 +/-    0.84  0.320 / 0.790
G30     157.8          10.7               12.7 +/-    2.64      35.0 +/-    2.64  0.090 / 0.180