PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-23:12:40
G05     47.3           23.2                8.8 +/-    0.64      17.9 +/-    0.64  0.210 / 0.490
G13     81.7           37.4               11.4 +/-    0.57      17.4 +/-    0.57  0.280 / 0.500
G15     131.7          49.5               12.8 +/-    0.87      16.2 +/-    0.87  0.040 / 0.080
G18     242.3          38.7               11.9 +/-    1.26      17.7 +/-    1.26  0.040 / 0.090
G20     26.8           68.4               11.2 +/-    0.56      12.0 +/-    0.56  0.030 / 0.040
G21     309.8          45.1               10.2 +/-    1.00      13.7 +/-    1.00  0.030 / 0.030
G25     197.2          10.6               15.8 +/-    4.94      43.4 +/-    4.94  0.130 / 0.270
G26     292.8          19.9               10.9 +/-    2.73      24.0 +/-    2.73  0.140 / 0.300
G29     151.8          73.3               11.4 +/-    0.48      11.8 +/-    0.48  0.080 / 0.130