PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-20:27:50
G01     269.5          41.2                8.6 +/-    2.02      12.2 +/-    2.02  0.060 / 0.070
G03     316.0          30.0                6.7 +/-    2.02      11.7 +/-    2.02  0.070 / 0.060
G10     130.1          15.5                8.9 +/-    2.57      21.9 +/-    2.57  0.170 / 0.220
G11     248.1          19.3                7.1 +/-    2.96      15.8 +/-    2.96  0.190 / 0.300
G14     44.9           49.1                6.1 +/-    1.17       7.8 +/-    1.17  0.080 / 0.360
G18     229.2          37.7                8.7 +/-    1.60      13.2 +/-    1.60  0.110 / 0.200
G22     313.9          52.2                6.8 +/-    0.46       8.4 +/-    0.46  0.040 / 0.060
G25     46.7           12.8                5.1 +/-    1.49      13.4 +/-    1.49  0.040 / 0.080
G31     58.9           77.2                6.6 +/-    0.40       6.8 +/-    0.40  0.040 / 0.050
G32     64.2           32.7                6.6 +/-    1.71      11.0 +/-    1.71  0.040 / 0.050