PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-23:13:00
G01     129.2          9.9               -10.7 +/-   35.13     -29.8 +/-   35.13  0.130 / 0.100
G07     42.9           69.8               12.1 +/-    0.70      12.8 +/-    0.70  0.090 / 0.130
G08     54.4           44.0               10.3 +/-    1.14      14.1 +/-    1.14  0.140 / 0.220
G09     179.5          40.1               12.9 +/-    1.22      18.8 +/-    1.22  0.270 / 0.310
G11     124.7          32.8               12.4 +/-    1.66      20.4 +/-    1.66  0.040 / 0.050
G17     200.3          10.7               -4.0 +/-   20.29     -11.0 +/-   20.29  0.040 / 0.040
G28     272.8          51.9               12.3 +/-    2.56      15.1 +/-    2.56  0.200 / 0.250
G30     335.6          61.5               10.8 +/-    0.65      12.1 +/-    0.65  0.030 / 0.030