PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-19:58:10
G02     26.4           60.9               11.1 +/-    0.60      12.5 +/-    0.60  0.030 / 0.050
G05     152.8          56.7               12.9 +/-    0.67      15.1 +/-    0.67  0.040 / 0.060
G06     52.1           18.6                8.5 +/-    1.38      19.4 +/-    1.38  0.030 / 0.040
G12     203.3          71.1               10.5 +/-    0.82      11.1 +/-    0.82  0.020 / 0.040
G19     98.1           10.3                9.3 +/-    2.01      25.7 +/-    2.01  0.040 / 0.060
G20     197.4          23.7               12.8 +/-    0.93      25.8 +/-    0.93  0.030 / 0.040
G25     297.5          55.3               11.5 +/-    1.18      13.7 +/-    1.18  0.050 / 0.120
G29     305.8          27.2                9.4 +/-    1.81      17.5 +/-    1.81  0.040 / 0.120