PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/10-03:42:50
G02     56.1           34.9                4.8 +/-    1.18       7.6 +/-    1.18  0.060 / 0.070
G05     64.9           63.8                7.7 +/-    0.70       8.5 +/-    0.70  0.040 / 0.060
G12     187.5          40.3                9.9 +/-    1.81      14.3 +/-    1.81  0.280 / 0.420
G13     131.0          11.7                6.7 +/-    3.27      18.1 +/-    3.27  0.230 / 0.480
G21     268.4          16.0                9.2 +/-    1.37      22.4 +/-    1.37  0.040 / 0.030
G25     242.5          55.1                7.6 +/-    0.75       9.1 +/-    0.75  0.040 / 0.030
G29     329.5          54.5                7.2 +/-    0.36       8.7 +/-    0.36  0.040 / 0.040