PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/21-00:27:50
G01     263.0          39.8               10.3 +/-    0.82      15.0 +/-    0.82  0.050 / 0.060
G03     316.4          33.5                8.3 +/-    1.23      13.5 +/-    1.23  0.050 / 0.050
G10     132.8          11.8                9.9 +/-    2.41      26.7 +/-    2.41  0.070 / 0.100
G11     244.0          17.0               10.7 +/-    3.23      25.4 +/-    3.23  0.090 / 0.090
G14     49.7           46.7                7.5 +/-    1.20       9.8 +/-    1.20  0.040 / 0.070
G18     226.5          34.4               10.7 +/-    1.15      17.1 +/-    1.15  0.050 / 0.090
G22     312.4          56.1                8.7 +/-    1.23      10.3 +/-    1.23  0.090 / 0.190
G25     44.8           12.6                5.6 +/-    0.67      14.8 +/-    0.67  0.110 / 0.200
G31     47.1           69.2                9.4 +/-    0.61      10.0 +/-    0.61  0.200 / 0.510
G32     69.3           28.5                7.0 +/-    0.75      12.6 +/-    0.75  0.160 / 0.420