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                9.5 +/-    2.09      13.9 +/-    2.09  0.070 / 0.070
G03     316.7          37.5                8.5 +/-    1.43      12.9 +/-    1.43  0.060 / 0.030
G10     132.4          13.4               10.8 +/-    2.29      27.9 +/-    2.29  0.050 / 0.060
G11     249.4          18.2                9.7 +/-    0.78      22.3 +/-    0.78  0.060 / 0.080
G14     47.0           48.6                8.1 +/-    0.93      10.4 +/-    0.93  0.020 / 0.030
G22     312.6          58.4                8.7 +/-    1.98      10.0 +/-    1.98  0.030 / 0.030
G25     48.7           15.6                7.2 +/-    4.19      17.5 +/-    4.19  0.070 / 0.160
G26     143.9          29.4               12.0 +/-    1.20      21.3 +/-    1.20  0.100 / 0.160
G31     47.0           68.3                8.7 +/-    0.54       9.3 +/-    0.54  0.140 / 0.220
G32     68.9           28.7                7.9 +/-    1.25      14.3 +/-    1.25  0.140 / 0.280