PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-22:43:00
G02     56.9           36.4                9.0 +/-    1.18      13.9 +/-    1.18  0.040 / 0.050
G05     62.6           64.8               10.6 +/-    0.84      11.6 +/-    0.84  0.040 / 0.060
G12     184.2          32.0               12.9 +/-    1.49      21.7 +/-    1.49  0.040 / 0.040
G13     130.2          14.7               14.6 +/-    3.69      36.6 +/-    3.69  0.030 / 0.050
G15     166.3          10.0               -6.8 +/-   21.58     -18.9 +/-   21.58  0.160 / 0.600
G20     206.1          61.0               15.0 +/-    0.57      16.9 +/-    0.57  0.140 / 0.410
G21     270.2          16.7               11.0 +/-    1.83      26.3 +/-    1.83  0.050 / 0.110
G25     230.1          51.3               11.5 +/-    1.11      14.3 +/-    1.11  0.050 / 0.090
G29     328.9          55.4               10.8 +/-    0.63      12.8 +/-    0.63  0.040 / 0.060