PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-22:42:50
G02     222.6          67.1               16.0 +/-    0.87      17.2 +/-    0.87  0.180 / 0.310
G06     47.8           71.2               14.5 +/-    0.46      15.2 +/-    0.46  0.170 / 0.330
G12     319.2          39.1               10.9 +/-    1.35      16.1 +/-    1.35  0.060 / 0.080
G17     62.3           28.2               12.2 +/-    2.44      22.2 +/-    2.44  0.070 / 0.090
G19     46.4           44.7               14.8 +/-    1.17      20.1 +/-    1.17  0.050 / 0.080
G24     256.0          39.6               16.1 +/-    1.52      23.5 +/-    1.52  0.050 / 0.080
G28     125.4          13.1               16.8 +/-    3.45      43.6 +/-    3.45  0.030 / 0.030