PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-06:43:10
G01     116.7          19.6                6.6 +/-    1.55      14.7 +/-    1.55  0.060 / 0.050
G07     88.2           64.2                5.3 +/-    0.49       5.8 +/-    0.49  0.070 / 0.050
G08     43.8           28.3                3.2 +/-    2.57       5.9 +/-    2.57  0.040 / 0.030
G09     176.5          23.3                6.4 +/-    1.51      13.0 +/-    1.51  0.030 / 0.030
G11     102.9          40.0                6.3 +/-    0.75       9.2 +/-    0.75  0.080 / 0.100
G13     317.2          20.0                2.8 +/-    1.56       6.1 +/-    1.56  0.060 / 0.120
G17     201.9          28.9                5.8 +/-    1.02      10.4 +/-    1.02  0.100 / 0.130
G28     298.9          58.6                4.1 +/-    0.73       4.8 +/-    0.73  0.090 / 0.140
G30     353.1          70.8                4.6 +/-    0.69       4.8 +/-    0.69  0.120 / 0.190