PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-16:58:10
G02     204.7          33.9               13.3 +/-    1.36      21.5 +/-    1.36  0.060 / 0.090
G06     155.4          71.6               11.6 +/-    1.18      12.2 +/-    1.18  0.050 / 0.090
G12     309.4          17.8               11.5 +/-    0.89      26.8 +/-    0.89  0.080 / 0.150
G17     40.8           45.2                8.4 +/-    0.68      11.3 +/-    0.68  0.080 / 0.120
G19     11.2           62.7                9.8 +/-    0.41      10.9 +/-    0.41  0.040 / 0.070
G24     297.3          38.1               11.7 +/-    1.41      17.6 +/-    1.41  0.030 / 0.060
G28     105.2          29.3                9.6 +/-    0.70      17.0 +/-    0.70  0.060 / 0.120