PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/15-09:27:30
G01     95.8           30.2                3.4 +/-    0.76       6.0 +/-    0.76  0.040 / 0.060
G07     120.7          48.2                1.8 +/-    0.69       2.3 +/-    0.69  0.030 / 0.060
G08     41.9           10.3                3.2 +/-    0.87       8.9 +/-    0.87  0.040 / 0.050
G11     74.0           40.1                3.3 +/-    0.90       4.7 +/-    0.90  0.030 / 0.050
G13     301.8          32.8                3.0 +/-    1.00       5.0 +/-    1.00  0.050 / 0.050
G17     210.7          50.8                6.1 +/-    1.00       7.6 +/-    1.00  0.030 / 0.050
G19     212.3          24.0                6.5 +/-    2.70      13.1 +/-    2.70  0.150 / 0.310
G28     340.2          61.8                3.1 +/-    0.48       3.5 +/-    0.48  0.100 / 0.240
G30     78.1           79.1                3.0 +/-    0.46       3.0 +/-    0.46  0.050 / 0.110