PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-09:58:10
G02     201.2          29.1                7.8 +/-    1.91      14.0 +/-    1.91  0.050 / 0.140
G06     172.5          59.4               10.5 +/-    0.43      12.0 +/-    0.43  0.080 / 0.130
G17     31.8           52.7                5.7 +/-    0.91       7.0 +/-    0.91  0.060 / 0.100
G19     350.8          68.1                5.6 +/-    0.67       6.0 +/-    0.67  0.090 / 0.100
G24     305.5          33.5                3.6 +/-    2.67       5.8 +/-    2.67  0.020 / 0.040
G28     96.8           34.6                7.9 +/-    0.67      12.7 +/-    0.67  0.040 / 0.030