PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-22:28:00
G10     259.8          32.8               18.1 +/-    1.88      29.9 +/-    1.88  0.040 / 0.030
G13     46.6           25.0               17.9 +/-    1.42      34.9 +/-    1.42  0.040 / 0.030
G15     68.9           53.9               19.8 +/-    0.57      23.8 +/-    0.57  0.160 / 0.090
G16     288.6          13.0               15.1 +/-    1.52      39.4 +/-    1.52  0.060 / 0.080
G18     286.3          61.4               17.7 +/-    1.27      19.9 +/-    1.27  0.040 / 0.040
G20     50.1           39.5               17.3 +/-    0.94      25.4 +/-    0.94  0.030 / 0.040
G21     350.5          68.0               18.6 +/-    0.58      19.9 +/-    0.58  0.120 / 0.340
G26     261.6          11.1               18.3 +/-    2.05      50.0 +/-    2.05  0.120 / 0.260
G27     320.5          14.9               14.5 +/-    1.81      36.2 +/-    1.81  0.050 / 0.080
G29     165.6          34.9               19.9 +/-    1.58      31.6 +/-    1.58  0.080 / 0.080