PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-12:58:10
G01     110.1          23.6                6.5 +/-    1.25      13.1 +/-    1.25  0.030 / 0.040
G07     103.2          57.8                4.9 +/-    0.59       5.7 +/-    0.59  0.030 / 0.040
G08     42.1           21.4                3.9 +/-    1.52       8.4 +/-    1.52  0.080 / 0.280
G09     173.7          14.6                6.5 +/-    1.25      16.3 +/-    1.25  0.080 / 0.260
G11     91.1           40.6                5.3 +/-    1.03       7.6 +/-    1.03  0.030 / 0.030
G13     313.5          24.6                4.4 +/-    3.17       8.7 +/-    3.17  0.030 / 0.050
G17     203.8          36.9                6.4 +/-    1.80       9.8 +/-    1.80  0.070 / 0.080
G19     207.9          11.5                1.3 +/-   14.20       3.5 +/-   14.20  0.060 / 0.100
G28     311.5          60.2                3.9 +/-    0.77       4.4 +/-    0.77  0.070 / 0.170
G30     2.7            74.6                4.4 +/-    0.77       4.6 +/-    0.77  0.080 / 0.170