PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/16-09:28:10
G01     93.2           31.0                4.8 +/-    0.60       8.3 +/-    0.60  0.040 / 0.050
G07     123.1          46.2                5.3 +/-    1.68       7.0 +/-    1.68  0.040 / 0.050
G11     71.2           39.4                3.9 +/-    1.04       5.7 +/-    1.04  0.050 / 0.050
G13     299.3          33.8                3.8 +/-    0.86       6.1 +/-    0.86  0.060 / 0.060
G17     212.3          53.2                6.2 +/-    0.58       7.6 +/-    0.58  0.050 / 0.050
G19     213.3          26.2                5.3 +/-    3.27      10.0 +/-    3.27  0.040 / 0.060
G28     345.0          61.7                2.4 +/-    0.70       2.7 +/-    0.70  0.070 / 0.120
G30     90.1           78.1                3.1 +/-    0.46       3.1 +/-    0.46  0.060 / 0.120