PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-13:43:10
G01     37.9           10.0                6.0 +/-    2.73      16.8 +/-    2.73  0.140 / 0.150
G02     200.1          14.5                8.2 +/-    1.83      20.7 +/-    1.83  0.150 / 0.190
G06     173.9          47.2               10.0 +/-    0.83      13.0 +/-    0.83  0.070 / 0.150
G13     233.2          16.9                6.6 +/-    1.89      15.6 +/-    1.89  0.070 / 0.150
G17     19.4           62.2                5.7 +/-    0.77       6.3 +/-    0.77  0.030 / 0.040
G19     311.1          72.1                5.5 +/-    0.58       5.8 +/-    0.58  0.030 / 0.040
G24     314.2          24.2                4.6 +/-    3.61       9.1 +/-    3.61  0.220 / 0.360
G28     82.3           42.3                5.3 +/-    0.56       7.5 +/-    0.56  0.160 / 0.400
G30     156.6          20.9                9.9 +/-    2.07      21.3 +/-    2.07  0.120 / 0.330