PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/10-04:28:00
G10     252.4          29.4                9.9 +/-    1.69      17.6 +/-    1.69  0.060 / 0.100
G13     51.3           27.8                4.9 +/-    1.81       8.9 +/-    1.81  0.100 / 0.100
G15     80.1           56.2                7.0 +/-    1.08       8.2 +/-    1.08  0.040 / 0.030
G16     296.7          14.5                7.1 +/-    1.33      18.0 +/-    1.33  0.050 / 0.040
G20     273.1          52.3                8.4 +/-    2.78      10.3 +/-    2.78  0.080 / 0.180
G21     338.7          62.3                6.9 +/-    0.68       7.6 +/-    0.68  0.120 / 0.150
G26     268.3          14.5                9.1 +/-    1.19      22.9 +/-    1.19  0.040 / 0.040
G29     162.5          44.3                9.1 +/-    0.61      12.3 +/-    0.61  0.030 / 0.030