PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-13:27:30
G02     202.0          17.0                6.6 +/-    0.91      15.6 +/-    0.91  0.100 / 0.100
G06     168.8          55.5                8.6 +/-    0.89      10.1 +/-    0.89  0.090 / 0.120
G13     226.5          12.8                5.2 +/-    2.36      13.7 +/-    2.36  0.170 / 0.250
G17     24.2           58.4                5.9 +/-    0.54       6.8 +/-    0.54  0.130 / 0.240
G19     309.1          69.8                6.1 +/-    0.87       6.5 +/-    0.87  0.110 / 0.460
G24     308.3          31.9                5.6 +/-    1.89       9.5 +/-    1.89  0.140 / 0.450
G28     87.9           40.1                7.5 +/-    0.53      10.8 +/-    0.53  0.030 / 0.040
G30     157.7          15.5                8.1 +/-    2.53      19.8 +/-    2.53  0.050 / 0.040