PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/21-02:13:00
G08     320.0          11.7                6.1 +/-   22.65      16.3 +/-   22.65  0.070 / 0.090
G10     306.9          54.7               11.9 +/-    0.98      14.2 +/-    0.98  0.070 / 0.070
G14     212.4          15.4               16.6 +/-    2.37      40.9 +/-    2.37  0.030 / 0.030
G15     45.8           24.9                9.7 +/-    2.39      19.1 +/-    2.39  0.030 / 0.030
G20     325.7          61.5               13.1 +/-    0.77      14.6 +/-    0.77  0.250 / 0.340
G21     112.1          70.8               13.6 +/-    0.93      14.3 +/-    0.93  0.220 / 0.390
G24     89.3           28.3               12.3 +/-    1.58      22.4 +/-    1.58  0.100 / 0.120
G27     293.4          36.4               10.4 +/-    1.65      16.2 +/-    1.65  0.110 / 0.120
G32     213.2          40.0               16.7 +/-    1.36      24.3 +/-    1.36  0.330 / 0.360