PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-17:27:50
G01     262.8          39.4                9.6 +/-    1.12      14.2 +/-    1.12  0.040 / 0.050
G03     316.7          37.8                7.8 +/-    0.96      11.8 +/-    0.96  0.040 / 0.050
G10     133.1          12.4               11.3 +/-    1.30      30.0 +/-    1.30  0.020 / 0.030
G11     247.8          17.6               10.9 +/-    2.60      25.5 +/-    2.60  0.030 / 0.050
G14     48.9           47.6                7.4 +/-    0.70       9.6 +/-    0.70  0.100 / 0.290
G22     312.1          58.8                8.4 +/-    0.95       9.7 +/-    0.95  0.070 / 0.210
G25     47.5           15.1                6.4 +/-    1.74      15.9 +/-    1.74  0.040 / 0.090
G26     143.4          30.3               11.7 +/-    1.70      20.3 +/-    1.70  0.050 / 0.080
G31     45.8           67.5                7.8 +/-    0.48       8.3 +/-    0.48  0.060 / 0.090
G32     69.8           28.1                7.6 +/-    0.56      13.8 +/-    0.56  0.060 / 0.080