PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-13:13:10
G01     107.1          25.3                4.7 +/-    0.81       9.2 +/-    0.81  0.030 / 0.030
G07     108.0          55.4                5.8 +/-    0.77       6.8 +/-    0.77  0.020 / 0.040
G08     41.8           18.7                4.9 +/-    2.04      11.2 +/-    2.04  0.030 / 0.050
G09     173.3          11.9                6.7 +/-    1.82      18.0 +/-    1.82  0.030 / 0.040
G11     86.8           40.7                5.6 +/-    0.72       8.1 +/-    0.72  0.070 / 0.170
G13     311.3          26.7                4.8 +/-    1.09       9.0 +/-    1.09  0.070 / 0.220
G17     205.1          40.1                6.7 +/-    0.80       9.7 +/-    0.80  0.040 / 0.080
G19     208.7          14.3                3.7 +/-    1.15       9.4 +/-    1.15  0.060 / 0.060
G28     317.7          60.8                4.6 +/-    0.67       5.2 +/-    0.67  0.080 / 0.180
G30     12.5           76.8                6.0 +/-    0.33       6.1 +/-    0.33  0.080 / 0.140