PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/10-12:43:10
G01     66.6           32.1                5.1 +/-    0.69       8.5 +/-    0.69  0.050 / 0.100
G07     139.1          25.5                4.3 +/-    1.05       8.4 +/-    1.05  0.050 / 0.080
G11     50.8           26.2                2.5 +/-    1.49       4.7 +/-    1.49  0.030 / 0.030
G13     272.8          36.3                4.1 +/-    0.86       6.3 +/-    0.86  0.040 / 0.030
G15     301.1          15.4               -1.4 +/-    2.09      -3.4 +/-    2.09  0.080 / 0.090
G17     243.8          74.7                3.4 +/-    0.41       3.5 +/-    0.41  0.050 / 0.110
G19     227.3          47.2                3.9 +/-    2.22       5.1 +/-    2.22  0.080 / 0.260
G28     26.2           58.2                5.9 +/-    0.81       6.8 +/-    0.81  0.100 / 0.220
G30     138.2          60.0                3.7 +/-    0.63       4.2 +/-    0.63  0.030 / 0.030