PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-15:12:30
G02     208.7          43.5               10.8 +/-    1.26      14.9 +/-    1.26  0.060 / 0.070
G06     109.1          78.3               10.8 +/-    0.43      11.0 +/-    0.43  0.070 / 0.070
G12     315.0          29.5                9.6 +/-    1.74      17.0 +/-    1.74  0.060 / 0.140
G17     47.8           39.2                9.0 +/-    0.52      13.3 +/-    0.52  0.060 / 0.150
G19     15.5           60.2                9.3 +/-    0.57      10.5 +/-    0.57  0.040 / 0.030
G24     281.2          42.9                8.4 +/-    1.14      11.7 +/-    1.14  0.030 / 0.030
G28     112.7          23.4                9.4 +/-    1.27      19.0 +/-    1.27  0.040 / 0.040