PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/21-02:28:10
G08     315.1          15.8                7.4 +/-    2.19      18.2 +/-    2.19  0.080 / 0.090
G10     319.1          57.7               11.9 +/-    0.73      13.8 +/-    0.73  0.070 / 0.080
G14     215.0          22.0               15.1 +/-    1.99      31.6 +/-    1.99  0.040 / 0.040
G15     45.9           18.7                8.2 +/-    2.00      18.8 +/-    2.00  0.040 / 0.040
G20     340.9          63.7               12.7 +/-    1.60      14.0 +/-    1.60  0.190 / 0.220
G21     125.5          64.7               14.2 +/-    0.76      15.6 +/-    0.76  0.100 / 0.260
G24     80.9           29.5               11.9 +/-    1.24      21.0 +/-    1.24  0.070 / 0.100
G27     284.3          37.6               11.8 +/-    0.79      17.8 +/-    0.79  0.080 / 0.100
G32     217.6          47.2               15.5 +/-    1.07      20.2 +/-    1.07  0.230 / 0.320