PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-14:12:40
G02     224.0          67.7                9.5 +/-    1.07      10.2 +/-    1.07  0.060 / 0.090
G06     45.8           69.0                7.9 +/-    0.51       8.4 +/-    0.51  0.080 / 0.090
G12     320.6          42.8                6.8 +/-    1.15       9.5 +/-    1.15  0.060 / 0.060
G17     65.6           25.4                7.4 +/-    0.82      14.3 +/-    0.82  0.050 / 0.070
G19     50.3           42.5                5.6 +/-    0.93       7.8 +/-    0.93  0.030 / 0.030
G24     257.2          39.1                9.1 +/-    1.15      13.4 +/-    1.15  0.030 / 0.030