PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/28-14:12:50
G01     50.3           25.3                7.4 +/-    0.97      14.3 +/-    0.97  0.040 / 0.070
G06     178.2          24.6               11.2 +/-    0.86      22.1 +/-    0.86  0.040 / 0.070
G07     145.8          10.3               12.7 +/-    1.45      35.2 +/-    1.45  0.130 / 0.250
G11     44.2           13.0                5.0 +/-    1.95      13.1 +/-    1.95  0.130 / 0.310
G13     253.2          30.4                9.9 +/-    1.24      17.1 +/-    1.24  0.080 / 0.210
G15     286.1          15.5                6.5 +/-    1.51      16.0 +/-    1.51  0.070 / 0.170
G17     327.5          78.7                8.3 +/-    0.52       8.5 +/-    0.52  0.060 / 0.120
G19     248.0          61.9                9.4 +/-    0.52      10.6 +/-    0.52  0.060 / 0.120
G28     52.5           52.8                6.8 +/-    0.51       8.3 +/-    0.51  0.030 / 0.030
G30     149.6          43.5               10.0 +/-    1.76      13.7 +/-    1.76  0.030 / 0.030