PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-17:58:00
G01     92.6           31.3               11.6 +/-    0.97      19.7 +/-    0.97  0.110 / 0.350
G07     123.6          47.7               12.2 +/-    0.55      15.9 +/-    0.55  0.120 / 0.390
G08     42.3           10.7               10.7 +/-    3.35      29.4 +/-    3.35  0.030 / 0.050
G11     71.7           40.9               10.9 +/-    0.83      15.7 +/-    0.83  0.040 / 0.050
G13     296.9          35.3               12.6 +/-    3.36      19.9 +/-    3.36  0.040 / 0.030
G17     213.6          49.1               14.0 +/-    1.02      17.8 +/-    1.02  0.030 / 0.030
G18     66.1           24.3               11.5 +/-    1.07      22.8 +/-    1.07  0.070 / 0.090
G19     213.9          23.5               14.9 +/-    1.54      30.1 +/-    1.54  0.100 / 0.100
G28     345.4          61.8               11.2 +/-    0.68      12.5 +/-    0.68  0.150 / 0.160
G30     97.4           77.0               12.4 +/-    0.58      12.7 +/-    0.58  0.140 / 0.230