PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/24-18:28:10
G01     220.4          11.0               12.7 +/-    1.55      34.7 +/-    1.55  0.030 / 0.040
G03     249.5          71.1               11.6 +/-    0.65      12.2 +/-    0.65  0.030 / 0.070
G09     299.0          12.2                7.1 +/-   16.49      19.0 +/-   16.49  0.100 / 0.250
G14     93.6           20.2               10.3 +/-    1.82      22.5 +/-    1.82  0.110 / 0.240
G16     138.3          53.4               15.0 +/-    0.42      18.2 +/-    0.42  0.090 / 0.120
G22     198.1          61.6               13.4 +/-    0.43      15.0 +/-    0.43  0.130 / 0.090
G23     315.1          45.2               11.3 +/-    0.80      15.2 +/-    0.80  0.050 / 0.030
G26     79.9           53.7               12.5 +/-    0.73      15.1 +/-    0.73  0.050 / 0.040
G31     49.1           24.3                8.5 +/-    2.08      17.0 +/-    2.08  0.030 / 0.030