PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/19-20:27:40
G01     295.2          38.9                8.2 +/-    1.71      12.1 +/-    1.71  0.080 / 0.130
G03     310.7          14.4                7.6 +/-    2.86      19.3 +/-    2.86  0.060 / 0.110
G10     116.8          32.0               10.6 +/-    0.60      17.9 +/-    0.60  0.060 / 0.080
G11     269.8          27.1                7.9 +/-    1.07      14.7 +/-    1.07  0.050 / 0.090
G14     18.9           60.7                7.9 +/-    0.65       9.0 +/-    0.65  0.020 / 0.030
G22     312.9          34.8                7.5 +/-    1.49      12.0 +/-    1.49  0.030 / 0.030
G25     70.2           18.7                8.4 +/-    0.70      19.0 +/-    0.70  0.060 / 0.130
G31     151.9          76.0               11.0 +/-    0.82      11.3 +/-    0.82  0.070 / 0.130
G32     47.1           45.0                7.3 +/-    0.46       9.9 +/-    0.46  0.030 / 0.050