PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/25-14:28:00
G02     201.4          17.6                8.5 +/-    0.88      19.9 +/-    0.88  0.110 / 0.180
G06     167.7          55.4                8.7 +/-    0.92      10.3 +/-    0.92  0.200 / 0.220
G13     227.1          13.2                9.0 +/-    2.23      23.3 +/-    2.23  0.080 / 0.100
G17     24.0           58.6                7.7 +/-    0.79       8.9 +/-    0.79  0.090 / 0.130
G19     309.2          70.1                7.2 +/-    0.88       7.6 +/-    0.88  0.050 / 0.040
G24     309.2          31.0                5.2 +/-    0.98       9.0 +/-    0.98  0.040 / 0.050
G28     87.3           40.1                8.7 +/-    0.32      12.6 +/-    0.32  0.190 / 0.570
G30     157.8          16.5                9.8 +/-    1.90      23.4 +/-    1.90  0.150 / 0.480