PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-19:42:40
G05     49.1           17.6                8.7 +/-    1.44      20.4 +/-    1.44  0.050 / 0.080
G10     237.5          14.3               11.0 +/-    1.78      27.7 +/-    1.78  0.050 / 0.070
G13     72.7           35.9               10.2 +/-    1.20      16.0 +/-    1.20  0.130 / 0.340
G15     130.1          53.0               11.2 +/-    0.42      13.7 +/-    0.42  0.120 / 0.350
G16     311.7          13.5                7.2 +/-    1.24      18.6 +/-    1.24  0.070 / 0.140
G20     250.1          38.5               10.8 +/-    0.96      16.1 +/-    0.96  0.080 / 0.160
G21     315.4          48.4               10.1 +/-    0.89      12.9 +/-    0.89  0.070 / 0.100
G26     284.9          20.2                8.0 +/-    2.29      17.6 +/-    2.29  0.070 / 0.110
G29     157.2          70.5               11.3 +/-    0.43      11.9 +/-    0.43  0.040 / 0.040