PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/06-16:12:20
G05     168.1          28.1                9.4 +/-    1.40      17.2 +/-    1.40  0.060 / 0.100
G06     40.9           42.8                6.8 +/-    0.94       9.5 +/-    0.94  0.070 / 0.110
G12     315.8          71.3                8.7 +/-    0.58       9.1 +/-    0.58  0.030 / 0.020
G17     83.4           12.7                7.4 +/-    1.79      19.6 +/-    1.79  0.040 / 0.030
G19     68.4           33.4                7.2 +/-    1.56      11.8 +/-    1.56  0.090 / 0.170
G24     229.2          24.9                9.4 +/-    2.09      18.4 +/-    2.09  0.120 / 0.120
G25     317.4          26.9                8.2 +/-    1.39      15.3 +/-    1.39  0.140 / 0.130