PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-10:27:50
G01     100.9          28.4                4.0 +/-    1.05       7.2 +/-    1.05  0.030 / 0.020
G07     115.6          52.9                5.8 +/-    0.77       7.0 +/-    0.77  0.030 / 0.020
G08     41.5           13.6                2.9 +/-    2.48       7.5 +/-    2.48  0.070 / 0.080
G11     79.1           42.0                4.7 +/-    0.56       6.6 +/-    0.56  0.070 / 0.110
G13     304.2          32.4                2.1 +/-    1.28       3.5 +/-    1.28  0.050 / 0.140
G17     208.0          45.5                5.7 +/-    0.75       7.6 +/-    0.75  0.060 / 0.130
G18     72.4           24.3                4.5 +/-    1.26       8.9 +/-    1.26  0.040 / 0.030
G28     328.1          61.5                3.5 +/-    0.39       3.9 +/-    0.39  0.040 / 0.030
G30     46.8           80.3                4.2 +/-    0.49       4.3 +/-    0.49  0.060 / 0.120