PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/29-20:27:50
G10     248.0          23.6               18.0 +/-    1.55      36.3 +/-    1.55  0.070 / 0.120
G13     57.8           33.0               17.2 +/-    1.69      28.3 +/-    1.69  0.070 / 0.110
G15     92.9           57.6               17.9 +/-    0.80      20.8 +/-    0.80  0.130 / 0.290
G16     302.7          13.7               11.9 +/-    2.18      30.4 +/-    2.18  0.220 / 0.300
G18     264.9          54.3               14.2 +/-    2.29      17.0 +/-    2.29  0.040 / 0.050
G20     40.5           51.3               16.2 +/-    0.71      20.1 +/-    0.71  0.040 / 0.050
G21     332.0          59.4               15.8 +/-    0.61      18.0 +/-    0.61  0.060 / 0.050
G26     275.1          16.2               13.6 +/-    2.05      32.8 +/-    2.05  0.060 / 0.050
G29     161.7          48.7               20.7 +/-    0.82      26.5 +/-    0.82  0.030 / 0.050