PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-14:12:50
G01     122.0          15.7                9.6 +/-    2.26      23.4 +/-    2.26  0.180 / 0.300
G07     71.2           68.1               10.2 +/-    0.42      10.9 +/-    0.42  0.150 / 0.370
G08     46.4           34.3                9.3 +/-    1.20      15.0 +/-    1.20  0.030 / 0.030
G09     176.4          28.2               10.5 +/-    0.70      19.1 +/-    0.70  0.030 / 0.030
G11     110.7          38.5               12.0 +/-    1.17      17.9 +/-    1.17  0.030 / 0.030
G13     319.1          16.8                8.8 +/-    3.28      21.0 +/-    3.28  0.020 / 0.030
G17     201.1          20.7                9.3 +/-    2.86      20.1 +/-    2.86  0.140 / 0.200
G18     97.6           19.5                9.3 +/-    2.34      20.7 +/-    2.34  0.150 / 0.280
G28     286.5          55.9                9.2 +/-    2.56      10.8 +/-    2.56  0.100 / 0.180
G30     340.1          65.3                9.6 +/-    0.61      10.5 +/-    0.61  0.110 / 0.190