PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-16:57:40
G02     216.1          56.9               13.0 +/-    0.84      15.2 +/-    0.84  0.140 / 0.070
G06     57.0           72.8               10.9 +/-    0.32      11.4 +/-    0.32  0.080 / 0.070
G12     319.7          39.7                8.6 +/-    1.38      12.6 +/-    1.38  0.050 / 0.070
G17     57.5           31.8               10.0 +/-    1.13      16.8 +/-    1.13  0.040 / 0.070
G19     34.5           52.2               11.1 +/-    1.76      13.7 +/-    1.76  0.040 / 0.020
G24     264.1          42.1               10.8 +/-    2.35      15.2 +/-    2.35  0.040 / 0.030
G28     122.1          14.3               11.2 +/-    1.69      28.2 +/-    1.69  0.060 / 0.060