PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/27-15:58:00
G02     27.5           59.4                7.2 +/-    0.30       8.2 +/-    0.30  0.060 / 0.060
G05     148.4          59.5                7.9 +/-    0.51       9.0 +/-    0.51  0.050 / 0.070
G06     53.2           16.1                5.8 +/-    2.57      13.9 +/-    2.57  0.050 / 0.050
G12     194.7          67.7                5.8 +/-    0.96       6.2 +/-    0.96  0.050 / 0.040
G19     97.3           14.1                7.8 +/-    1.36      19.8 +/-    1.36  0.130 / 0.250
G25     296.3          54.8                8.5 +/-    1.49      10.2 +/-    1.49  0.140 / 0.310
G29     306.0          26.3                4.7 +/-    2.00       9.0 +/-    2.00  0.020 / 0.050