PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-19:42:50
G02     277.6          79.5               11.2 +/-    0.91      11.4 +/-    0.91  0.030 / 0.030
G05     170.3          24.0               15.5 +/-    0.92      31.0 +/-    0.92  0.040 / 0.030
G06     40.6           46.8               10.0 +/-    0.58      13.2 +/-    0.58  0.080 / 0.120
G12     318.8          65.2                9.9 +/-    0.61      10.8 +/-    0.61  0.080 / 0.130
G17     81.8           13.3               11.0 +/-    1.80      28.5 +/-    1.80  0.040 / 0.040
G19     69.9           29.9                9.2 +/-    2.39      16.2 +/-    2.39  0.040 / 0.050
G24     236.1          28.3               13.3 +/-    1.04      24.2 +/-    1.04  0.200 / 0.190
G25     317.7          27.0               10.5 +/-    2.72      19.7 +/-    2.72  0.120 / 0.120