PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-22:27:50
G01     76.5           33.3               12.8 +/-    0.65      21.0 +/-    0.65  0.060 / 0.100
G07     134.5          35.8               14.7 +/-    1.39      23.0 +/-    1.39  0.050 / 0.080
G11     59.0           35.5               10.5 +/-    0.35      16.5 +/-    0.35  0.060 / 0.110
G13     281.2          37.6               12.7 +/-    0.98      19.3 +/-    0.98  0.070 / 0.110
G15     306.3          14.4                9.7 +/-    2.52      24.4 +/-    2.52  0.030 / 0.050
G17     225.7          60.5               15.0 +/-    0.82      16.9 +/-    0.82  0.030 / 0.050
G18     53.5           20.7               10.1 +/-    1.57      21.9 +/-    1.57  0.030 / 0.050
G19     220.9          37.1               15.6 +/-    1.45      23.9 +/-    1.45  0.030 / 0.050
G28     11.9           60.2                9.8 +/-    0.76      11.1 +/-    0.76  0.090 / 0.310
G30     129.9          63.8               14.2 +/-    0.56      15.7 +/-    0.56  0.090 / 0.270