PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-02:42:40
G08     318.6          13.1                7.3 +/-    1.02      19.0 +/-    1.02  0.030 / 0.040
G10     306.2          54.1                8.1 +/-    1.31       9.7 +/-    1.31  0.040 / 0.050
G14     212.0          19.6               15.4 +/-    2.63      34.3 +/-    2.63  0.090 / 0.130
G15     45.7           25.0                7.8 +/-    2.55      15.3 +/-    2.55  0.070 / 0.170
G18     8.8            65.0                7.5 +/-    1.01       8.2 +/-    1.01  0.050 / 0.050
G20     76.6           12.5                6.5 +/-    0.96      17.1 +/-    0.96  0.040 / 0.040
G21     113.4          69.6                9.7 +/-    0.87      10.3 +/-    0.87  0.070 / 0.090
G24     91.8           28.8                9.2 +/-    1.06      16.6 +/-    1.06  0.060 / 0.080
G27     290.9          37.2               10.1 +/-    2.60      15.4 +/-    2.60  0.180 / 0.570
G32     214.1          37.8               12.8 +/-    1.82      19.3 +/-    1.82  0.120 / 0.290