PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-15:42:40
G01     73.6           32.9               10.7 +/-    0.69      17.7 +/-    0.69  0.080 / 0.110
G07     135.7          29.9               10.9 +/-    0.94      19.2 +/-    0.94  0.070 / 0.120
G11     54.4           29.6                8.5 +/-    1.12      15.1 +/-    1.12  0.040 / 0.030
G13     280.1          37.0               12.5 +/-    0.75      19.2 +/-    0.75  0.050 / 0.040
G15     308.1          13.0                9.0 +/-    1.18      23.5 +/-    1.18  0.060 / 0.110
G17     230.0          69.4               12.5 +/-    0.71      13.2 +/-    0.71  0.070 / 0.120
G19     222.3          41.6               13.1 +/-    1.33      18.6 +/-    1.33  0.030 / 0.040
G28     14.9           59.7               10.7 +/-    0.35      12.2 +/-    0.35  0.030 / 0.040
G30     130.8          67.0               10.5 +/-    0.42      11.3 +/-    0.42  0.060 / 0.080