PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/09-04:57:50
G01     116.6          19.7                7.4 +/-    1.64      16.4 +/-    1.64  0.040 / 0.050
G07     87.9           64.5                4.8 +/-    0.96       5.3 +/-    0.96  0.050 / 0.040
G08     43.9           28.8                3.9 +/-    2.42       7.0 +/-    2.42  0.180 / 0.100
G09     176.9          23.7                5.0 +/-    0.90      10.0 +/-    0.90  0.120 / 0.110
G11     103.7          40.3                6.0 +/-    0.78       8.6 +/-    0.78  0.090 / 0.120
G13     317.0          20.3                2.8 +/-    1.45       6.2 +/-    1.45  0.160 / 0.110
G17     202.2          28.4                6.0 +/-    0.97      10.9 +/-    0.97  0.140 / 0.130
G28     299.2          58.7                4.2 +/-    0.82       4.8 +/-    0.82  0.130 / 0.190
G30     356.1          71.6                4.4 +/-    0.43       4.6 +/-    0.43  0.030 / 0.030