PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-11:12:30
G01     108.3          24.7                5.2 +/-    1.05      10.3 +/-    1.05  0.090 / 0.270
G08     41.9           19.8                3.2 +/-    2.54       7.2 +/-    2.54  0.110 / 0.210
G09     173.7          13.2                6.0 +/-    1.37      15.6 +/-    1.37  0.070 / 0.160
G11     89.0           41.0                5.6 +/-    1.69       8.1 +/-    1.69  0.090 / 0.130
G13     312.2          25.9                2.8 +/-    1.95       5.4 +/-    1.95  0.110 / 0.130
G17     204.6          38.8                8.8 +/-    1.21      13.0 +/-    1.21  0.110 / 0.210
G19     208.4          13.2                3.5 +/-    1.66       9.1 +/-    1.66  0.020 / 0.020
G28     315.8          60.7                3.5 +/-    0.79       3.9 +/-    0.79  0.030 / 0.020
G30     11.1           76.3                4.7 +/-    0.64       4.8 +/-    0.64  0.090 / 0.080