PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/22-16:27:40
G02     59.9           32.2               10.4 +/-    0.68      17.5 +/-    0.68  0.030 / 0.040
G05     60.9           63.8               11.0 +/-    0.65      12.1 +/-    0.65  0.030 / 0.040
G12     186.0          33.4               14.6 +/-    1.86      23.8 +/-    1.86  0.060 / 0.060
G13     129.8          15.0               15.1 +/-    1.79      37.5 +/-    1.79  0.050 / 0.050
G15     163.3          12.2               15.5 +/-    2.28      41.4 +/-    2.28  0.120 / 0.300
G20     208.1          59.3               17.4 +/-    1.26      19.9 +/-    1.26  0.150 / 0.310
G21     272.0          19.5                9.6 +/-    2.06      21.4 +/-    2.06  0.080 / 0.070
G25     234.0          51.5               13.1 +/-    1.86      16.2 +/-    1.86  0.070 / 0.100
G29     333.6          59.9               11.7 +/-    0.80      13.2 +/-    0.80  0.060 / 0.070