PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-23:58:10
G01     128.9          10.2              -11.5 +/-   31.44     -32.0 +/-   31.44  0.100 / 0.100
G07     44.5           69.7                7.8 +/-    0.56       8.2 +/-    0.56  0.090 / 0.120
G08     53.6           43.2                7.3 +/-    0.98      10.1 +/-    0.98  0.030 / 0.060
G09     179.4          39.6                9.2 +/-    1.01      13.5 +/-    1.01  0.050 / 0.030
G11     123.7          33.1                8.3 +/-    1.39      13.6 +/-    1.39  0.290 / 0.220
G17     200.2          11.6               -2.4 +/-   18.23      -6.5 +/-   18.23  0.060 / 0.220
G28     273.5          52.1                8.8 +/-    2.59      10.8 +/-    2.59  0.130 / 0.240
G30     336.7          62.1                6.7 +/-    0.50       7.5 +/-    0.50  0.260 / 0.300