PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-14:58:00
G02     202.7          25.6               10.2 +/-    1.83      19.6 +/-    1.83  0.110 / 0.320
G06     161.7          64.2               11.5 +/-    1.49      12.6 +/-    1.49  0.090 / 0.410
G12     305.5          15.0                6.4 +/-    2.14      15.9 +/-    2.14  0.100 / 0.150
G17     31.9           52.4                8.4 +/-    0.80      10.3 +/-    0.80  0.110 / 0.150
G19     335.0          69.0                9.1 +/-    1.06       9.6 +/-    1.06  0.050 / 0.140
G24     302.7          36.1                8.3 +/-    1.85      13.0 +/-    1.85  0.050 / 0.120
G28     96.1           35.3                9.3 +/-    1.38      14.6 +/-    1.38  0.030 / 0.040