PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-18:12:30
G02     248.4          76.1               12.5 +/-    0.55      12.8 +/-    0.55  0.030 / 0.030
G05     173.7          16.6               12.9 +/-    2.34      30.9 +/-    2.34  0.030 / 0.030
G06     40.3           54.5               12.5 +/-    0.65      15.0 +/-    0.65  0.200 / 0.220
G12     321.5          56.7               11.0 +/-    0.63      12.9 +/-    0.63  0.220 / 0.270
G17     75.9           17.6               10.9 +/-    2.43      25.4 +/-    2.43  0.090 / 0.090
G19     62.9           34.4               12.1 +/-    1.76      19.5 +/-    1.76  0.090 / 0.100
G24     243.2          33.0               13.0 +/-    2.29      21.4 +/-    2.29  0.030 / 0.040
G25     317.5          20.0               10.9 +/-    1.33      23.9 +/-    1.33  0.030 / 0.040