PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-14:12:40
G01     71.4           32.8                6.7 +/-    1.17      11.1 +/-    1.17  0.050 / 0.130
G07     136.8          28.8                8.6 +/-    1.12      15.5 +/-    1.12  0.070 / 0.110
G11     53.2           28.7                4.7 +/-    0.57       8.5 +/-    0.57  0.070 / 0.130
G13     277.9          36.9                7.4 +/-    0.78      11.4 +/-    0.78  0.080 / 0.120
G15     305.6          14.1                4.0 +/-    1.76      10.3 +/-    1.76  0.040 / 0.040
G17     233.5          71.2                6.9 +/-    0.75       7.3 +/-    0.75  0.030 / 0.080
G19     223.7          43.4                9.9 +/-    2.42      13.7 +/-    2.42  0.030 / 0.040
G28     18.5           59.3                6.7 +/-    0.55       7.6 +/-    0.55  0.030 / 0.040
G30     133.5          64.8                7.3 +/-    0.59       8.0 +/-    0.59  0.060 / 0.090