PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-22:42:50
G02     212.9          57.1               16.7 +/-    0.82      19.5 +/-    0.82  0.070 / 0.090
G06     68.2           76.7               14.6 +/-    0.27      14.9 +/-    0.27  0.070 / 0.090
G12     317.5          33.2               11.9 +/-    1.76      19.5 +/-    1.76  0.070 / 0.080
G17     52.3           37.4               12.3 +/-    1.56      18.6 +/-    1.56  0.060 / 0.060
G19     33.1           52.7               13.7 +/-    1.35      16.7 +/-    1.35  0.020 / 0.020
G24     270.2          42.3               15.4 +/-    2.93      21.6 +/-    2.93  0.030 / 0.030
G28     120.2          16.2               15.6 +/-    2.83      37.8 +/-    2.83  0.150 / 0.230