PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/24-09:28:10
G02     201.0          28.6                6.6 +/-    1.90      11.9 +/-    1.90  0.070 / 0.120
G06     173.3          58.3                8.1 +/-    0.67       9.3 +/-    0.67  0.050 / 0.120
G17     31.1           53.3                4.4 +/-    0.86       5.3 +/-    0.86  0.070 / 0.100
G19     349.0          68.4                4.2 +/-    0.61       4.5 +/-    0.61  0.060 / 0.080
G24     306.0          33.1                3.0 +/-    2.74       5.0 +/-    2.74  0.030 / 0.030
G28     96.1           35.0                6.1 +/-    0.87       9.7 +/-    0.87  0.030 / 0.050