PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-05:43:10
G02     38.5           50.8                3.8 +/-    1.27       4.8 +/-    1.27  0.040 / 0.030
G05     128.0          65.2                5.9 +/-    0.49       6.4 +/-    0.49  0.040 / 0.030
G06     55.5           14.3                2.3 +/-    3.67       5.7 +/-    3.67  0.040 / 0.030
G12     197.7          64.6                5.8 +/-    0.71       6.3 +/-    0.71  0.030 / 0.030
G20     202.5          22.2                4.8 +/-    2.19      10.0 +/-    2.19  0.300 / 0.180
G25     292.3          54.8                6.2 +/-    1.50       7.4 +/-    1.50  0.280 / 0.230
G29     310.2          31.2                4.1 +/-    1.38       6.9 +/-    1.38  0.370 / 0.190