PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-13:27:40
G02     204.6          30.1                6.0 +/-    2.23      10.4 +/-    2.23  0.090 / 0.090
G03     58.7           9.4                 4.0 +/-   11.65      11.2 +/-   11.65  0.070 / 0.090
G06     157.2          69.4                7.2 +/-    0.43       7.6 +/-    0.43  0.120 / 0.120
G12     308.2          17.9                4.7 +/-    1.49      10.8 +/-    1.49  0.100 / 0.120
G17     36.9           48.2                6.5 +/-    1.28       8.4 +/-    1.28  0.130 / 0.280
G19     347.6          67.1                5.4 +/-    0.60       5.8 +/-    0.60  0.110 / 0.280
G24     296.0          39.7                5.8 +/-    6.28       8.5 +/-    6.28  0.030 / 0.030
G28     101.6          32.3                6.6 +/-    0.69      11.0 +/-    0.69  0.030 / 0.020