PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/21-17:58:00
G02     9.6            70.1                9.8 +/-    0.54      10.3 +/-    0.54  0.050 / 0.060
G05     157.7          46.8               11.3 +/-    0.46      14.8 +/-    0.46  0.050 / 0.060
G06     46.8           26.1                6.9 +/-    1.94      13.1 +/-    1.94  0.170 / 0.450
G12     223.8          80.5                7.9 +/-    0.30       8.0 +/-    0.30  0.120 / 0.360
G19     85.5           22.2                7.8 +/-    1.45      16.3 +/-    1.45  0.030 / 0.030
G24     217.0          12.8               11.7 +/-    3.01      30.7 +/-    3.01  0.020 / 0.030
G25     312.1          42.1                8.6 +/-    0.85      12.0 +/-    0.85  0.060 / 0.090
G29     295.4          15.9                8.3 +/-    2.75      20.2 +/-    2.75  0.050 / 0.090