PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/28-20:58:10
G01     127.5          11.4               12.7 +/-    4.42      34.4 +/-    4.42  0.050 / 0.040
G07     49.5           69.8               12.7 +/-    0.48      13.5 +/-    0.48  0.040 / 0.050
G08     53.4           43.9               10.4 +/-    0.60      14.2 +/-    0.60  0.030 / 0.030
G09     179.0          37.5               13.5 +/-    1.09      20.4 +/-    1.09  0.030 / 0.020
G11     121.7          34.4               13.3 +/-    1.12      21.3 +/-    1.12  0.160 / 0.270
G13     321.5          10.7               -6.5 +/-   10.46     -17.8 +/-   10.46  0.160 / 0.260
G17     201.1          11.3               -0.1 +/-   33.02      -0.3 +/-   33.02  0.030 / 0.030
G18     104.9          16.3               12.3 +/-    1.98      29.8 +/-    1.98  0.030 / 0.030
G28     276.1          53.0               11.6 +/-    3.76      14.1 +/-    3.76  0.140 / 0.110
G30     336.3          62.1               11.8 +/-    0.67      13.2 +/-    0.67  0.130 / 0.070