PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-19:12:40
G02     229.7          68.0               43.4 +/-   25.75      46.4 +/-   25.75  0.140 / 0.230
G05     175.8          10.5               -0.4 +/-   39.17      -1.2 +/-   39.17  0.100 / 0.280
G06     42.5           62.1              -13.2 +/-   21.36     -14.7 +/-   21.36  0.060 / 0.090
G12     321.9          49.3               11.2 +/-    1.61      14.3 +/-    1.61  0.060 / 0.090
G17     69.4           22.4                9.1 +/-    0.86      18.9 +/-    0.86  0.080 / 0.190
G19     55.1           39.4              -42.3 +/-   58.92     -62.2 +/-   58.92  0.070 / 0.160
G24     251.9          37.3               14.6 +/-    1.11      22.2 +/-    1.11  0.030 / 0.070
G25     316.2          13.3               10.9 +/-    1.94      28.2 +/-    1.94  0.030 / 0.060