PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-04:58:20
G01     103.7          27.2                9.4 +/-    0.81      17.6 +/-    0.81  0.040 / 0.050
G07     111.7          55.3                8.5 +/-    0.41      10.0 +/-    0.41  0.040 / 0.050
G08     41.8           17.4                3.1 +/-    1.27       7.2 +/-    1.27  0.040 / 0.040
G09     174.6          11.3                5.6 +/-    2.24      15.1 +/-    2.24  0.040 / 0.050
G11     85.4           42.4                7.7 +/-    0.45      10.8 +/-    0.45  0.120 / 0.260
G13     308.0          29.5                5.6 +/-    3.47      10.0 +/-    3.47  0.160 / 0.260
G17     207.2          42.1               11.3 +/-    0.55      16.0 +/-    0.55  0.060 / 0.120
G19     209.9          17.0                6.8 +/-    1.94      16.2 +/-    1.94  0.060 / 0.120
G28     326.0          61.5                5.2 +/-    0.98       5.8 +/-    0.98  0.050 / 0.050
G30     49.4           78.8                6.9 +/-    0.86       7.0 +/-    0.86  0.050 / 0.060