PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-22:27:30
G10     248.7          25.3               12.3 +/-    2.39      23.8 +/-    2.39  0.040 / 0.070
G13     55.5           30.9                9.6 +/-    1.67      16.6 +/-    1.67  0.040 / 0.080
G15     97.4           59.3                9.7 +/-    1.15      11.1 +/-    1.15  0.140 / 0.800
G16     296.2          16.2                8.7 +/-    2.52      21.0 +/-    2.52  0.140 / 0.580
G20     252.7          18.7               12.8 +/-    1.06      29.1 +/-    1.06  0.060 / 0.170
G21     329.6          57.8                7.2 +/-    0.62       8.3 +/-    0.62  0.070 / 0.130
G26     268.3          16.6               14.5 +/-    2.62      34.8 +/-    2.62  0.020 / 0.050
G29     164.6          53.8               10.7 +/-    1.08      13.0 +/-    1.08  0.030 / 0.040