PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-22:12:40
G10     253.6          28.3               19.0 +/-    1.94      34.5 +/-    1.94  0.030 / 0.040
G13     51.7           29.5               18.3 +/-    0.89      32.4 +/-    0.89  0.030 / 0.040
G15     80.6           56.9               19.7 +/-    0.67      23.1 +/-    0.67  0.060 / 0.120
G16     295.2          14.0               14.3 +/-    1.48      36.5 +/-    1.48  0.110 / 0.100
G18     274.5          57.9               16.4 +/-    1.83      19.0 +/-    1.83  0.030 / 0.040
G20     45.5           45.0               17.4 +/-    0.74      23.5 +/-    0.74  0.040 / 0.030
G21     339.6          63.4               18.8 +/-    0.63      20.8 +/-    0.63  0.070 / 0.400
G26     267.7          14.0               16.3 +/-    1.66      41.5 +/-    1.66  0.110 / 0.360
G29     164.2          42.2               19.7 +/-    0.69      27.6 +/-    0.69  0.070 / 0.060