PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/13-22:27:50
G01     220.5          11.5                8.9 +/-    2.60      24.1 +/-    2.60  0.120 / 0.390
G03     263.8          70.1                6.7 +/-    0.56       7.1 +/-    0.56  0.200 / 0.440
G09     299.6          14.8                6.5 +/-    2.25      16.2 +/-    2.25  0.050 / 0.080
G14     93.6           18.6                7.5 +/-    0.75      17.0 +/-    0.75  0.050 / 0.090
G16     139.5          52.1                9.6 +/-    1.20      11.8 +/-    1.20  0.090 / 0.220
G22     203.7          63.4                7.9 +/-    0.91       8.7 +/-    0.91  0.110 / 0.240
G23     312.0          41.3                6.6 +/-    1.20       9.4 +/-    1.20  0.060 / 0.070
G26     85.8           55.3                6.5 +/-    0.51       7.7 +/-    0.51  0.060 / 0.060
G31     47.6           28.8                4.0 +/-    0.69       7.2 +/-    0.69  0.050 / 0.050