PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-11:27:40
G02     220.9          66.7                9.5 +/-    0.70      10.3 +/-    0.70  0.060 / 0.090
G06     49.8           73.6                6.7 +/-    0.52       6.9 +/-    0.52  0.060 / 0.090
G12     319.9          39.8                5.3 +/-    0.96       7.7 +/-    0.96  0.070 / 0.060
G17     63.2           27.5                3.0 +/-    0.57       5.6 +/-    0.57  0.060 / 0.070
G19     47.4           44.3                5.0 +/-    0.42       6.8 +/-    0.42  0.040 / 0.070
G24     260.2          39.9                7.7 +/-    0.88      11.2 +/-    0.88  0.030 / 0.060