PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/06-11:43:00
G01     47.0           22.8                2.9 +/-    0.45       6.0 +/-    0.45  0.100 / 0.260
G06     178.3          27.8                6.6 +/-    1.22      12.1 +/-    1.22  0.210 / 0.250
G13     248.5          28.1                7.1 +/-    2.12      12.9 +/-    2.12  0.040 / 0.070
G15     280.7          15.1                6.2 +/-    2.20      15.4 +/-    2.20  0.040 / 0.060
G17     343.8          76.3                5.3 +/-    0.56       5.4 +/-    0.56  0.020 / 0.030
G19     256.2          65.0                4.6 +/-    0.89       5.0 +/-    0.89  0.020 / 0.030
G28     59.1           50.9                4.5 +/-    0.66       5.6 +/-    0.66  0.070 / 0.120
G30     151.4          38.1                7.6 +/-    1.43      11.3 +/-    1.43  0.060 / 0.130