PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-11:28:00
G01     44.0           20.1                3.6 +/-    2.79       7.8 +/-    2.79  0.470 / 0.240
G06     175.1          34.4                5.6 +/-    1.85       9.0 +/-    1.85  0.170 / 0.260
G13     241.8          25.5                5.2 +/-    1.52      10.0 +/-    1.52  0.070 / 0.090
G15     280.3          12.9                3.5 +/-    1.04       9.0 +/-    1.04  0.060 / 0.080
G17     355.2          73.4                5.6 +/-    0.49       5.9 +/-    0.49  0.070 / 0.190
G19     258.0          62.0                6.6 +/-    0.94       7.3 +/-    0.94  0.140 / 0.240
G24     317.1          17.5                2.9 +/-    2.73       6.7 +/-    2.73  0.090 / 0.240
G28     63.5           50.1                4.9 +/-    0.41       6.1 +/-    0.41  0.100 / 0.150
G30     153.6          34.3                6.2 +/-    1.18      10.0 +/-    1.18  0.100 / 0.090