PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/28-14:43:10
G03     316.7          42.2                7.9 +/-    0.67      11.2 +/-    0.67  0.070 / 0.070
G11     244.4          15.7                9.1 +/-    1.32      22.3 +/-    1.32  0.050 / 0.080
G14     51.6           46.6                6.1 +/-    1.50       8.0 +/-    1.50  0.030 / 0.040
G18     226.5          32.4               10.3 +/-    1.37      17.2 +/-    1.37  0.030 / 0.030
G22     309.3          64.6                7.5 +/-    0.86       8.3 +/-    0.86  0.180 / 0.160
G25     44.8           13.7                5.5 +/-    2.90      14.1 +/-    2.90  0.130 / 0.190
G31     43.2           62.7                7.0 +/-    0.58       7.8 +/-    0.58  0.050 / 0.080
G32     73.1           25.4                6.7 +/-    1.39      13.0 +/-    1.39  0.050 / 0.080