PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-14:57:30
G02     202.7          25.6               11.1 +/-    1.81      21.5 +/-    1.81  0.060 / 0.100
G06     161.7          64.2               10.0 +/-    0.74      11.0 +/-    0.74  0.090 / 0.080
G12     305.5          15.0                5.0 +/-    2.68      12.4 +/-    2.68  0.070 / 0.220
G17     31.9           52.4                8.1 +/-    0.95       9.9 +/-    0.95  0.070 / 0.220
G19     335.0          69.0                7.3 +/-    0.48       7.8 +/-    0.48  0.030 / 0.030
G24     302.7          36.1                6.7 +/-    2.10      10.4 +/-    2.10  0.030 / 0.030
G28     96.1           35.3                8.9 +/-    1.16      14.0 +/-    1.16  0.040 / 0.040