PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-14:12:40
G02     201.9          27.2               11.7 +/-    1.04      21.8 +/-    1.04  0.080 / 0.110
G06     168.1          61.8               11.7 +/-    0.71      13.1 +/-    0.71  0.070 / 0.110
G12     304.3          10.5               -6.3 +/-   14.64     -17.4 +/-   14.64  0.090 / 0.420
G17     33.0           51.7                6.2 +/-    0.90       7.7 +/-    0.90  0.140 / 0.440
G19     352.7          67.9                6.4 +/-    0.82       6.9 +/-    0.82  0.020 / 0.050
G24     305.6          33.4                5.1 +/-    2.35       8.4 +/-    2.35  0.030 / 0.050
G28     96.9           34.7                8.1 +/-    0.69      12.9 +/-    0.69  0.070 / 0.110