PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/12-21:12:50
G01     250.6          35.5               10.5 +/-    1.18      16.6 +/-    1.18  0.070 / 0.100
G03     316.1          43.7                6.8 +/-    2.74       9.4 +/-    2.74  0.070 / 0.090
G11     235.7          11.5                8.1 +/-    2.49      21.8 +/-    2.49  0.090 / 0.230
G14     60.8           40.2                8.2 +/-    0.65      11.8 +/-    0.65  0.100 / 0.230
G18     217.4          26.1               11.9 +/-    1.00      22.7 +/-    1.00  0.130 / 0.430
G22     304.4          65.8                8.9 +/-    0.75       9.7 +/-    0.75  0.130 / 0.390
G23     286.0          17.8                8.0 +/-    1.64      18.7 +/-    1.64  0.060 / 0.100
G26     138.8          37.4               12.3 +/-    1.05      18.7 +/-    1.05  0.060 / 0.090
G31     40.6           62.1                8.0 +/-    0.67       8.9 +/-    0.67  0.030 / 0.050
G32     77.0           23.4                8.4 +/-    0.99      17.0 +/-    0.99  0.040 / 0.050