PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/15-14:27:50
G01     299.6          37.3                7.9 +/-    2.59      12.0 +/-    2.59  0.040 / 0.050
G10     113.6          34.6                8.4 +/-    0.66      13.5 +/-    0.66  0.050 / 0.050
G11     276.2          26.8                8.4 +/-    1.76      15.8 +/-    1.76  0.020 / 0.030
G14     7.4            64.0                7.4 +/-    0.53       8.1 +/-    0.53  0.030 / 0.030
G22     312.8          34.9                7.7 +/-    1.27      12.2 +/-    1.27  0.080 / 0.160
G25     75.1           18.5                7.5 +/-    1.40      17.1 +/-    1.40  0.090 / 0.100
G31     150.4          74.0               10.0 +/-    0.80      10.4 +/-    0.80  0.080 / 0.100
G32     45.2           46.0                6.9 +/-    0.71       9.2 +/-    0.71  0.070 / 0.090