PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/18-23:42:40
G01     69.0           32.7               14.0 +/-    1.07      23.3 +/-    1.07  0.040 / 0.090
G07     138.4          30.0               19.0 +/-    1.09      33.2 +/-    1.09  0.040 / 0.060
G11     54.2           31.7               12.6 +/-    1.30      21.2 +/-    1.30  0.030 / 0.040
G13     273.1          37.1               18.2 +/-    2.57      27.8 +/-    2.57  0.030 / 0.050
G15     300.7          15.9               11.7 +/-    1.89      28.5 +/-    1.89  0.030 / 0.030
G17     235.1          67.2               17.6 +/-    0.63      18.9 +/-    0.63  0.030 / 0.030
G19     225.5          43.3               19.4 +/-    1.97      26.8 +/-    1.97  0.060 / 0.110
G28     23.4           58.7               13.2 +/-    2.59      15.2 +/-    2.59  0.070 / 0.110
G30     136.8          57.0               18.2 +/-    0.53      21.2 +/-    0.53  0.050 / 0.090