PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-09:27:50
G01     82.4           33.0                4.7 +/-    0.45       7.8 +/-    0.45  0.030 / 0.030
G07     131.0          38.8                6.9 +/-    0.68      10.2 +/-    0.68  0.030 / 0.030
G11     60.4           35.8                3.3 +/-    0.62       5.2 +/-    0.62  0.040 / 0.060
G13     286.4          37.8                3.8 +/-    1.16       5.7 +/-    1.16  0.040 / 0.060
G17     219.8          62.2                7.1 +/-    0.81       8.0 +/-    0.81  0.060 / 0.110
G18     55.8           21.2                2.0 +/-    0.97       4.2 +/-    0.97  0.060 / 0.110
G19     217.9          29.2                6.4 +/-    1.65      11.4 +/-    1.65  0.080 / 0.100
G28     359.3          61.3                3.3 +/-    0.43       3.6 +/-    0.43  0.080 / 0.110
G30     120.3          72.7                6.4 +/-    1.20       6.7 +/-    1.20  0.090 / 0.120