PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/21-02:12:50
G08     320.0          11.7                7.7 +/-    6.80      20.6 +/-    6.80  0.060 / 0.090
G10     306.9          54.7               11.3 +/-    0.96      13.5 +/-    0.96  0.060 / 0.080
G14     212.4          15.4               16.7 +/-    2.30      41.3 +/-    2.30  0.170 / 0.410
G15     45.8           24.9                9.1 +/-    1.62      17.9 +/-    1.62  0.150 / 0.290
G20     325.7          61.5               12.9 +/-    0.56      14.5 +/-    0.56  0.030 / 0.040
G21     112.1          70.8               14.4 +/-    1.13      15.1 +/-    1.13  0.030 / 0.040
G24     89.3           28.3               11.6 +/-    1.30      21.1 +/-    1.30  0.080 / 0.130
G27     293.4          36.4               10.9 +/-    1.04      16.9 +/-    1.04  0.080 / 0.130
G32     213.2          40.0               15.5 +/-    1.50      22.5 +/-    1.50  0.040 / 0.040