PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/17-15:43:10
G01     250.3          34.8                9.6 +/-    1.89      15.4 +/-    1.89  0.040 / 0.080
G03     315.5          49.6                8.3 +/-    0.62      10.5 +/-    0.62  0.040 / 0.080
G11     239.2          12.2                8.2 +/-    2.41      21.7 +/-    2.41  0.120 / 0.230
G14     59.4           42.3                7.6 +/-    0.97      10.6 +/-    0.97  0.080 / 0.220
G22     301.0          69.9                8.5 +/-    0.25       9.0 +/-    0.25  0.030 / 0.040
G23     288.5          22.1                8.8 +/-    2.02      18.4 +/-    2.02  0.040 / 0.040
G25     39.8           10.2                6.0 +/-    2.93      16.8 +/-    2.93  0.030 / 0.040
G31     41.0           56.1                7.7 +/-    0.56       9.0 +/-    0.56  0.040 / 0.030
G32     78.7           21.3                6.0 +/-    2.68      12.7 +/-    2.68  0.080 / 0.090