PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-14:58:00
G08     272.6          18.8                5.0 +/-    0.96      11.2 +/-    0.96  0.140 / 0.250
G10     55.0           59.8                4.2 +/-    0.76       4.8 +/-    0.76  0.200 / 0.290
G11     314.9          13.2                4.2 +/-    2.90      10.9 +/-    2.90  0.130 / 0.260
G14     259.3          63.1                5.9 +/-    0.77       6.5 +/-    0.77  0.100 / 0.290
G21     153.4          15.9                7.2 +/-    3.54      17.6 +/-    3.54  0.070 / 0.120
G24     41.2           12.7                4.2 +/-    2.26      10.9 +/-    2.26  0.040 / 0.090
G27     233.1          17.5                6.8 +/-    1.97      15.8 +/-    1.97  0.050 / 0.050
G31     178.6          27.9                7.8 +/-    1.21      14.3 +/-    1.21  0.040 / 0.050
G32     330.7          75.2                5.7 +/-    0.56       5.8 +/-    0.56  0.040 / 0.040