PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-20:58:00
G01     252.0          36.1                9.7 +/-    2.20      15.1 +/-    2.20  0.080 / 0.100
G03     316.3          42.6                6.1 +/-    0.70       8.6 +/-    0.70  0.100 / 0.120
G11     236.6          12.2                7.7 +/-    1.52      20.6 +/-    1.52  0.050 / 0.070
G14     59.6           40.9                5.6 +/-    1.44       8.1 +/-    1.44  0.040 / 0.070
G18     218.1          27.1                8.4 +/-    3.24      15.6 +/-    3.24  0.240 / 0.300
G22     305.9          64.8                7.4 +/-    0.64       8.1 +/-    0.64  0.130 / 0.420
G23     285.1          17.1                9.0 +/-    2.10      21.2 +/-    2.10  0.040 / 0.090
G26     140.0          36.3                7.2 +/-    1.16      11.2 +/-    1.16  0.060 / 0.070
G31     41.0           63.6                5.4 +/-    0.55       5.9 +/-    0.55  0.030 / 0.040
G32     75.9           24.3                7.0 +/-    1.13      14.0 +/-    1.13  0.040 / 0.040