PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-13:28:00
G02     202.0          17.0                5.9 +/-    1.30      13.9 +/-    1.30  0.180 / 0.270
G06     168.8          55.5                7.7 +/-    0.99       9.2 +/-    0.99  0.180 / 0.450
G13     226.5          12.8                5.0 +/-    7.38      13.2 +/-    7.38  0.110 / 0.240
G17     24.2           58.4                5.7 +/-    1.02       6.6 +/-    1.02  0.150 / 0.240
G19     309.1          69.8                5.3 +/-    0.72       5.6 +/-    0.72  0.090 / 0.110
G24     308.3          31.9                4.6 +/-    1.98       7.8 +/-    1.98  0.100 / 0.110
G28     87.9           40.1                6.7 +/-    1.72       9.7 +/-    1.72  0.040 / 0.030
G30     157.7          15.5                7.2 +/-    1.45      17.6 +/-    1.45  0.030 / 0.040