PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-13:43:10
G01     108.3          24.6               10.0 +/-    1.31      19.8 +/-    1.31  0.180 / 0.200
G07     106.3          56.1                8.8 +/-    0.78      10.3 +/-    0.78  0.210 / 0.200
G08     41.9           19.8                6.8 +/-    2.58      15.1 +/-    2.58  0.030 / 0.020
G09     173.7          13.3                7.5 +/-    1.19      19.3 +/-    1.19  0.030 / 0.020
G11     88.3           40.6                9.0 +/-    0.82      13.0 +/-    0.82  0.030 / 0.030
G13     312.1          25.9                5.4 +/-    2.03      10.3 +/-    2.03  0.030 / 0.040
G17     204.6          38.8               11.0 +/-    1.14      16.3 +/-    1.14  0.110 / 0.250
G19     208.4          13.2                5.4 +/-    2.08      14.1 +/-    2.08  0.100 / 0.230
G28     315.1          60.5                5.9 +/-    0.76       6.7 +/-    0.76  0.070 / 0.110
G30     7.7            75.9                7.3 +/-    0.72       7.5 +/-    0.72  0.090 / 0.120