PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/26-08:27:40
G07     45.0           69.5                4.8 +/-    0.81       5.1 +/-    0.81  0.070 / 0.060
G08     51.8           40.2                3.4 +/-    0.94       4.9 +/-    0.94  0.050 / 0.070
G09     174.3          34.6                8.7 +/-    2.27      13.9 +/-    2.27  0.190 / 0.440
G11     120.2          33.7                8.4 +/-    0.84      13.6 +/-    0.84  0.200 / 0.360
G17     198.9          13.3                3.2 +/-    1.67       8.3 +/-    1.67  0.030 / 0.030
G18     105.3          15.0                6.1 +/-    0.99      15.2 +/-    0.99  0.030 / 0.030
G23     161.1          11.7                3.6 +/-    2.37       9.6 +/-    2.37  0.140 / 0.260
G27     38.0           10.9                2.7 +/-    1.17       7.5 +/-    1.17  0.170 / 0.290
G28     270.2          50.3                4.5 +/-    1.07       5.7 +/-    1.07  0.130 / 0.230
G30     327.3          56.5                3.0 +/-    1.11       3.5 +/-    1.11  0.130 / 0.250