PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-03:27:30
G02     63.7           28.6                3.6 +/-    0.94       6.5 +/-    0.94  0.130 / 0.120
G05     51.9           55.6                5.1 +/-    0.73       6.0 +/-    0.73  0.060 / 0.110
G12     185.3          30.0                8.3 +/-    1.48      14.5 +/-    1.48  0.080 / 0.210
G13     123.4          18.1                7.6 +/-    1.43      17.6 +/-    1.43  0.080 / 0.240
G15     160.2          16.7                7.4 +/-    2.64      17.7 +/-    2.64  0.060 / 0.070
G21     276.2          21.6                8.3 +/-    1.70      17.5 +/-    1.70  0.050 / 0.060
G25     228.8          48.3                9.3 +/-    1.41      12.0 +/-    1.41  0.040 / 0.040
G29     337.1          63.2                5.6 +/-    0.87       6.2 +/-    0.87  0.040 / 0.040