PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-16:57:30
G02     205.2          35.4               14.6 +/-    0.48      23.1 +/-    0.48  0.070 / 0.080
G06     152.6          72.9               12.3 +/-    1.10      12.8 +/-    1.10  0.050 / 0.090
G12     310.1          18.9               10.5 +/-    0.99      23.8 +/-    0.99  0.130 / 0.170
G17     41.9           44.2                8.9 +/-    1.13      12.1 +/-    1.13  0.160 / 0.180
G19     13.7           61.7                9.8 +/-    0.67      11.0 +/-    0.67  0.030 / 0.050
G24     295.8          38.7               11.7 +/-    1.62      17.3 +/-    1.62  0.040 / 0.050
G28     106.5          28.4                8.6 +/-    1.33      15.7 +/-    1.33  0.040 / 0.030