PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-00:58:10
G10     251.3          26.4               13.6 +/-    1.73      25.8 +/-    1.73  0.080 / 0.230
G13     53.6           30.7               10.8 +/-    2.17      18.7 +/-    2.17  0.090 / 0.280
G15     89.0           58.5               13.8 +/-    0.58      15.8 +/-    0.58  0.120 / 0.190
G16     296.2          14.6                8.6 +/-    2.69      21.6 +/-    2.69  0.080 / 0.120
G18     269.2          55.3               11.3 +/-    2.13      13.5 +/-    2.13  0.040 / 0.050
G20     44.3           46.3               11.2 +/-    0.61      14.8 +/-    0.61  0.030 / 0.040
G21     334.2          60.8               10.9 +/-    0.64      12.3 +/-    0.64  0.160 / 0.290
G26     268.5          15.1               12.9 +/-    1.28      32.0 +/-    1.28  0.100 / 0.300
G29     164.5          46.8               13.7 +/-    0.50      18.0 +/-    0.50  0.040 / 0.050