PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/05-14:42:50
G02     209.4          44.5               10.1 +/-    0.57      13.8 +/-    0.57  0.040 / 0.040
G06     101.6          78.3                9.6 +/-    0.59       9.8 +/-    0.59  0.040 / 0.040
G12     315.7          30.9                8.7 +/-    1.27      15.0 +/-    1.27  0.070 / 0.260
G17     49.1           38.0                7.7 +/-    0.93      11.6 +/-    0.93  0.080 / 0.240
G19     17.2           59.6                8.1 +/-    0.75       9.3 +/-    0.75  0.070 / 0.130
G24     279.3          43.1                7.8 +/-    1.60      10.7 +/-    1.60  0.060 / 0.110
G28     113.7          22.6               10.0 +/-    0.68      20.7 +/-    0.68  0.030 / 0.020