PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/14-21:12:50
G01     91.1           31.7               14.9 +/-    0.96      25.3 +/-    0.96  0.380 / 0.150
G07     124.8          46.7               16.6 +/-    0.83      21.9 +/-    0.83  0.170 / 0.130
G08     42.5           11.9                9.6 +/-    2.02      25.7 +/-    2.02  0.090 / 0.050
G11     71.5           41.2               13.5 +/-    1.20      19.3 +/-    1.20  0.080 / 0.050
G13     295.8          35.5               14.5 +/-    2.91      22.9 +/-    2.91  0.030 / 0.010
G17     214.9          48.1               17.3 +/-    0.68      22.4 +/-    0.68  0.030 / 0.010
G18     65.1           24.2               13.1 +/-    1.93      26.1 +/-    1.93  0.050 / 0.020
G19     214.4          25.7               20.5 +/-    1.55      39.4 +/-    1.55  0.050 / 0.030
G28     348.6          61.8               14.2 +/-    0.45      15.8 +/-    0.45  0.060 / 0.120
G30     105.1          74.6               16.1 +/-    0.50      16.6 +/-    0.50  0.070 / 0.170