PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/27-15:12:50
G01     56.0           28.9               11.0 +/-    1.02      19.8 +/-    1.02  0.040 / 0.050
G06     177.8          20.2              -22.7 +/-   25.19     -49.8 +/-   25.19  0.040 / 0.050
G07     144.0          18.6               11.0 +/-    1.03      25.0 +/-    1.03  0.060 / 0.090
G11     46.3           19.8               10.8 +/-    1.00      24.0 +/-    1.00  0.060 / 0.080
G13     257.5          33.7               11.6 +/-    1.38      18.9 +/-    1.38  0.100 / 0.270
G15     292.7          15.3                8.3 +/-    2.43      20.6 +/-    2.43  0.110 / 0.260
G17     279.5          78.6               13.4 +/-    0.46      13.6 +/-    0.46  0.040 / 0.060
G19     236.2          51.1               13.2 +/-    0.98      16.5 +/-    0.98  0.040 / 0.060
G28     42.1           55.4               12.9 +/-    0.41      15.3 +/-    0.41  0.080 / 0.260
G30     146.6          49.3               13.0 +/-    0.72      16.6 +/-    0.72  0.060 / 0.210