PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-13:42:50
G01     106.9          25.4                8.5 +/-    1.26      16.5 +/-    1.26  0.030 / 0.050
G07     108.3          55.1                8.8 +/-    0.34      10.4 +/-    0.34  0.030 / 0.050
G08     41.8           18.6                6.9 +/-    1.23      15.8 +/-    1.23  0.070 / 0.130
G09     173.4          12.0                6.7 +/-    1.76      17.9 +/-    1.76  0.080 / 0.140
G11     86.4           40.7                9.0 +/-    0.80      12.9 +/-    0.80  0.030 / 0.030
G13     311.1          26.9                5.9 +/-    1.24      11.1 +/-    1.24  0.030 / 0.020
G17     205.1          40.3                9.0 +/-    0.66      13.0 +/-    0.66  0.040 / 0.070
G19     208.8          14.5                5.3 +/-    1.76      13.4 +/-    1.76  0.080 / 0.070
G28     318.0          60.8                7.0 +/-    0.77       7.9 +/-    0.77  0.080 / 0.220
G30     12.6           76.8                8.3 +/-    0.50       8.5 +/-    0.50  0.080 / 0.180