PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/02-00:27:50
G02     248.2          78.2                9.1 +/-    0.89       9.2 +/-    0.89  0.040 / 0.050
G05     170.1          18.4               17.4 +/-    1.57      39.8 +/-    1.57  0.040 / 0.060
G06     40.4           56.5                8.4 +/-    0.69       9.9 +/-    0.69  0.050 / 0.200
G12     321.5          53.6                9.4 +/-    1.75      11.4 +/-    1.75  0.060 / 0.200
G17     70.4           24.7                9.1 +/-    0.45      17.8 +/-    0.45  0.090 / 0.100
G19     57.9           38.6                8.6 +/-    0.34      12.8 +/-    0.34  0.120 / 0.110
G24     243.6          33.9               13.0 +/-    0.94      21.1 +/-    0.94  0.030 / 0.030
G25     316.9          12.8                7.1 +/-    2.21      18.5 +/-    2.21  0.030 / 0.030