PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-14:27:30
G02     202.3          28.3                9.3 +/-    1.31      16.9 +/-    1.31  0.120 / 0.220
G03     63.7           9.5                 0.9 +/-   28.40       2.5 +/-   28.40  0.110 / 0.240
G06     166.9          63.2                8.6 +/-    0.38       9.5 +/-    0.38  0.130 / 0.200
G12     305.1          11.5               -0.6 +/-   17.62      -1.5 +/-   17.62  0.140 / 0.210
G17     34.2           50.8                6.8 +/-    0.94       8.5 +/-    0.94  0.030 / 0.040
G19     355.8          67.2                6.6 +/-    0.74       7.1 +/-    0.74  0.030 / 0.040
G24     304.5          34.2                5.7 +/-    0.68       9.3 +/-    0.68  0.060 / 0.100
G28     98.2           33.9                6.6 +/-    0.73      10.7 +/-    0.73  0.050 / 0.140