PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/27-13:57:50
G01     58.2           29.6                6.9 +/-    0.72      12.3 +/-    0.72  0.110 / 0.250
G06     180.0          16.4                9.9 +/-    2.93      23.8 +/-    2.93  0.070 / 0.190
G07     142.7          18.1                7.9 +/-    1.48      18.3 +/-    1.48  0.110 / 0.360
G11     46.9           20.0                6.0 +/-    0.94      13.2 +/-    0.94  0.080 / 0.310
G13     263.1          34.3                8.5 +/-    1.42      13.7 +/-    1.42  0.050 / 0.050
G15     294.4          15.9                5.1 +/-    1.45      12.4 +/-    1.45  0.040 / 0.050
G17     276.4          79.4                7.5 +/-    0.70       7.7 +/-    0.70  0.030 / 0.030
G19     235.3          54.4                7.7 +/-    1.51       9.2 +/-    1.51  0.030 / 0.030
G28     39.0           55.9                7.5 +/-    0.36       8.8 +/-    0.36  0.060 / 0.120
G30     144.6          52.5                7.9 +/-    1.15       9.7 +/-    1.15  0.040 / 0.100