PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-07:57:40
G08     271.1          19.6                3.2 +/-    1.71       7.0 +/-    1.71  0.220 / 0.250
G10     56.2           58.7                2.2 +/-    1.05       2.5 +/-    1.05  0.150 / 0.320
G14     259.3          64.7                1.6 +/-    0.78       1.7 +/-    0.78  0.100 / 0.200
G18     313.8          30.4                5.7 +/-    1.45       9.9 +/-    1.45  0.080 / 0.250
G20     92.0           38.8                5.0 +/-    0.82       7.4 +/-    0.82  0.030 / 0.030
G21     154.1          18.0                4.1 +/-    2.38       9.4 +/-    2.38  0.030 / 0.030
G24     41.0           11.8                1.5 +/-    1.36       4.0 +/-    1.36  0.040 / 0.060
G27     235.7          18.8                7.6 +/-    1.43      17.2 +/-    1.43  0.050 / 0.060
G31     178.9          26.7                6.0 +/-    3.02      11.3 +/-    3.02  0.080 / 0.200
G32     308.4          75.0                3.6 +/-    1.25       3.7 +/-    1.25  0.090 / 0.170