PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/27-15:58:00
G01     41.1           16.3               11.2 +/-    1.33      27.1 +/-    1.33  0.080 / 0.160
G06     173.0          41.0               15.5 +/-    1.34      22.2 +/-    1.34  0.070 / 0.150
G13     237.3          21.9               13.8 +/-    4.83      29.0 +/-    4.83  0.140 / 0.330
G15     273.6          11.8               12.7 +/-    1.52      34.1 +/-    1.52  0.130 / 0.300
G17     3.0            70.1               13.3 +/-    0.65      14.0 +/-    0.65  0.040 / 0.110
G19     271.8          66.6               12.2 +/-    0.87      13.2 +/-    0.87  0.040 / 0.080
G24     316.0          20.6               11.5 +/-    3.53      24.9 +/-    3.53  0.140 / 0.320
G28     71.7           46.9               11.9 +/-    0.61      15.6 +/-    0.61  0.110 / 0.240
G30     155.0          28.4               13.4 +/-    1.26      24.3 +/-    1.26  0.090 / 0.260