PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/29-20:42:50
G10     253.6          28.3               15.6 +/-    2.15      28.3 +/-    2.15  0.100 / 0.230
G13     51.5           29.3               16.4 +/-    1.64      29.1 +/-    1.64  0.090 / 0.240
G15     79.4           56.4               15.6 +/-    0.64      18.3 +/-    0.64  0.030 / 0.050
G18     275.1          58.4               15.3 +/-    0.77      17.6 +/-    0.77  0.030 / 0.050
G20     45.2           45.5               14.6 +/-    0.52      19.5 +/-    0.52  0.090 / 0.150
G21     341.1          64.0               15.5 +/-    0.91      17.0 +/-    0.91  0.080 / 0.170
G26     268.7          13.9               14.2 +/-    1.30      36.2 +/-    1.30  0.040 / 0.070
G29     163.6          41.2               20.5 +/-    0.78      29.3 +/-    0.78  0.040 / 0.080