PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/23-13:13:00
G10     92.5           48.1                5.1 +/-    0.98       6.6 +/-    0.98  0.040 / 0.040
G11     296.8          25.0                5.1 +/-    1.58       9.9 +/-    1.58  0.040 / 0.050
G14     317.7          70.2                4.1 +/-    0.39       4.3 +/-    0.39  0.120 / 0.270
G18     110.2          20.0               18.8 +/-    7.91      41.4 +/-    7.91  0.100 / 0.240
G22     305.8          20.0                3.4 +/-    0.86       7.6 +/-    0.86  0.110 / 0.090
G25     94.0           12.5                7.7 +/-    1.69      20.3 +/-    1.69  0.070 / 0.070
G31     171.6          53.5                7.1 +/-    0.47       8.6 +/-    0.47  0.090 / 0.190
G32     24.3           59.9                4.7 +/-    0.98       5.4 +/-    0.98  0.150 / 0.170