PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-12:58:00
G01     70.0           32.6                8.1 +/-    1.16      13.4 +/-    1.16  0.030 / 0.040
G07     137.5          28.1                8.7 +/-    1.28      15.9 +/-    1.28  0.030 / 0.030
G11     52.6           28.2                5.5 +/-    1.00      10.1 +/-    1.00  0.060 / 0.110
G13     276.5          36.7                9.5 +/-    1.51      14.7 +/-    1.51  0.040 / 0.120
G15     303.9          14.7                1.7 +/-    2.60       4.3 +/-    2.60  0.100 / 0.320
G17     236.2          72.2                8.1 +/-    0.64       8.5 +/-    0.64  0.110 / 0.380
G19     224.7          44.5               11.7 +/-    1.48      15.9 +/-    1.48  0.030 / 0.040
G28     21.0           59.0                7.5 +/-    0.43       8.6 +/-    0.43  0.020 / 0.050
G30     135.1          63.1                9.0 +/-    0.61      10.0 +/-    0.61  0.050 / 0.080