PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-01:57:50
G02     44.6           45.2                9.9 +/-    0.87      13.3 +/-    0.87  0.040 / 0.040
G05     103.6          68.7               12.9 +/-    0.79      13.7 +/-    0.79  0.030 / 0.040
G12     189.6          53.7               14.1 +/-    0.89      17.0 +/-    0.89  0.030 / 0.030
G25     275.5          57.9               16.0 +/-    2.63      18.5 +/-    2.63  0.040 / 0.030
G29     315.4          36.8               11.7 +/-    1.12      18.0 +/-    1.12  0.040 / 0.040