PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-16:58:00
G02     352.2          75.5                6.7 +/-    0.59       6.9 +/-    0.59  0.030 / 0.030
G05     162.5          38.6                9.1 +/-    1.08      13.5 +/-    1.08  0.020 / 0.030
G06     43.0           34.2                6.0 +/-    1.15       9.8 +/-    1.15  0.070 / 0.110
G12     299.5          76.0                6.9 +/-    0.49       7.1 +/-    0.49  0.060 / 0.120
G17     88.8           10.9                7.7 +/-    3.09      21.1 +/-    3.09  0.030 / 0.040
G19     80.5           22.1                6.5 +/-    1.53      13.7 +/-    1.53  0.040 / 0.040
G24     224.9          18.8                9.0 +/-    0.96      20.3 +/-    0.96  0.140 / 0.360
G25     315.8          33.0                6.9 +/-    1.08      11.4 +/-    1.08  0.140 / 0.380
G29     289.9          12.2                9.8 +/-    2.29      25.9 +/-    2.29  0.040 / 0.080