PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/16-11:12:40
G01     43.8           19.6                3.0 +/-    1.01       6.7 +/-    1.01  0.040 / 0.100
G06     177.7          32.5                4.5 +/-    2.05       7.4 +/-    2.05  0.050 / 0.120
G13     243.7          25.2                3.9 +/-    0.99       7.6 +/-    0.99  0.090 / 0.200
G15     275.8          13.9                3.4 +/-    1.06       8.6 +/-    1.06  0.080 / 0.200
G17     357.5          72.8                3.9 +/-    0.83       4.1 +/-    0.83  0.030 / 0.030
G19     267.9          68.2                2.8 +/-    0.66       3.0 +/-    0.66  0.020 / 0.030
G24     318.4          14.0               -0.8 +/-   10.40      -2.0 +/-   10.40  0.150 / 0.210
G28     66.0           48.7                2.7 +/-    0.40       3.5 +/-    0.40  0.140 / 0.280
G30     153.1          32.8                6.4 +/-    1.43      10.6 +/-    1.43  0.050 / 0.090