PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/15-21:57:40
G08     303.8          21.4                8.5 +/-    1.68      18.1 +/-    1.68  0.060 / 0.090
G10     340.6          61.1                8.7 +/-    0.82       9.8 +/-    0.82  0.090 / 0.070
G14     221.3          37.0               12.5 +/-    1.17      19.2 +/-    1.17  0.040 / 0.080
G18     47.8           56.7                9.8 +/-    0.56      11.5 +/-    0.56  0.030 / 0.070
G21     138.5          49.3               11.3 +/-    0.89      14.4 +/-    0.89  0.050 / 0.080
G24     69.4           30.1                9.8 +/-    0.69      17.2 +/-    0.69  0.060 / 0.100
G27     266.2          36.3               12.8 +/-    1.04      19.8 +/-    1.04  0.040 / 0.050
G32     228.4          54.2               12.4 +/-    0.52      14.9 +/-    0.52  0.030 / 0.050