PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-15:42:50
G02     210.8          48.2               11.5 +/-    0.87      14.8 +/-    0.87  0.120 / 0.110
G06     85.6           77.9               10.0 +/-    0.41      10.3 +/-    0.41  0.100 / 0.120
G12     316.9          33.0                7.5 +/-    1.34      12.4 +/-    1.34  0.080 / 0.090
G17     51.2           36.5                8.5 +/-    1.86      13.1 +/-    1.86  0.090 / 0.100
G19     22.7           57.5                9.4 +/-    1.70      10.9 +/-    1.70  0.050 / 0.020
G24     275.1          43.2                9.3 +/-    2.94      12.8 +/-    2.94  0.040 / 0.030
G28     116.2          20.3                7.9 +/-    2.33      17.1 +/-    2.33  0.070 / 0.040