PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-16:27:50
G01     264.4          39.8                9.4 +/-    0.88      13.8 +/-    0.88  0.090 / 0.310
G03     316.7          37.5                7.9 +/-    1.14      12.0 +/-    1.14  0.080 / 0.340
G10     132.4          13.4               11.3 +/-    0.99      29.2 +/-    0.99  0.030 / 0.030
G11     249.4          18.2               10.2 +/-    2.97      23.4 +/-    2.97  0.020 / 0.030
G14     47.0           48.6                7.8 +/-    0.96      10.1 +/-    0.96  0.040 / 0.050
G22     312.6          58.4                7.3 +/-    0.83       8.4 +/-    0.83  0.040 / 0.070
G25     48.7           15.6                6.8 +/-    1.51      16.7 +/-    1.51  0.040 / 0.080
G26     143.9          29.4               12.4 +/-    1.32      21.9 +/-    1.32  0.040 / 0.080
G31     47.0           68.3                8.4 +/-    0.56       9.0 +/-    0.56  0.150 / 0.310
G32     68.9           28.7                6.6 +/-    0.77      11.8 +/-    0.77  0.120 / 0.300