PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/22-23:27:50
G01     253.4          36.3                9.5 +/-    2.18      14.7 +/-    2.18  0.040 / 0.030
G03     316.2          41.0                7.6 +/-    1.19      10.8 +/-    1.19  0.040 / 0.030
G11     238.7          13.9                8.2 +/-    1.17      21.0 +/-    1.17  0.080 / 0.090
G14     58.8           41.5                7.1 +/-    1.13      10.1 +/-    1.13  0.060 / 0.080
G22     307.5          63.3                7.8 +/-    0.74       8.6 +/-    0.74  0.100 / 0.260
G23     284.7          17.2                9.2 +/-    1.50      21.6 +/-    1.50  0.090 / 0.240
G25     40.7           10.8                6.7 +/-    4.95      18.4 +/-    4.95  0.030 / 0.030
G26     141.5          35.2               11.3 +/-    1.64      17.9 +/-    1.64  0.020 / 0.030
G31     40.8           63.9                7.4 +/-    0.58       8.1 +/-    0.58  0.070 / 0.070
G32     74.9           25.5                7.1 +/-    2.58      13.7 +/-    2.58  0.050 / 0.070