PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-21:28:00
G10     292.7          49.7               19.1 +/-    0.66      24.2 +/-    0.66  0.050 / 0.050
G14     209.4          10.7                6.2 +/-   49.17      16.9 +/-   49.17  0.040 / 0.050
G15     46.6           30.5               17.1 +/-    1.16      29.7 +/-    1.16  0.050 / 0.120
G18     353.1          66.5               19.6 +/-    0.54      21.2 +/-    0.54  0.060 / 0.120
G20     69.5           19.9               19.7 +/-    1.52      43.5 +/-    1.52  0.060 / 0.110
G21     92.1           73.7               22.5 +/-    0.72      23.4 +/-    0.72  0.060 / 0.110
G24     101.9          25.4               22.1 +/-    1.05      42.7 +/-    1.05  0.250 / 0.800
G27     301.7          34.0               18.9 +/-    0.92      30.5 +/-    0.92  0.290 / 0.780
G32     210.5          26.3               24.1 +/-    0.86      45.8 +/-    0.86  0.070 / 0.230