PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-07:57:50
G08     271.1          19.6                4.2 +/-    1.93       9.4 +/-    1.93  0.300 / 0.390
G10     56.2           58.7                3.7 +/-    0.76       4.2 +/-    0.76  0.220 / 0.490
G14     259.3          64.7                2.7 +/-    0.64       3.0 +/-    0.64  0.100 / 0.200
G18     313.8          30.4                1.8 +/-    1.31       3.1 +/-    1.31  0.140 / 0.200
G20     92.0           38.8                4.0 +/-    1.02       5.9 +/-    1.02  0.040 / 0.030
G21     154.1          18.0                5.4 +/-    0.96      12.4 +/-    0.96  0.040 / 0.030
G24     41.0           11.8                2.1 +/-    1.37       5.6 +/-    1.37  0.030 / 0.020
G27     235.7          18.8                5.4 +/-    5.37      12.3 +/-    5.37  0.020 / 0.040
G31     178.9          26.7                7.0 +/-    1.21      13.2 +/-    1.21  0.040 / 0.050
G32     308.4          75.0                3.0 +/-    0.89       3.1 +/-    0.89  0.060 / 0.050