PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/16-16:12:30
G01     239.0          27.9                9.8 +/-    1.48      18.0 +/-    1.48  0.070 / 0.100
G03     308.6          60.2               13.9 +/-    1.05      15.8 +/-    1.05  0.080 / 0.100
G14     70.9           35.6                6.9 +/-    2.07      10.8 +/-    2.07  0.030 / 0.030
G16     156.9          29.9               12.0 +/-    1.56      21.1 +/-    1.56  0.030 / 0.030
G22     265.6          76.7                9.8 +/-    0.69      10.0 +/-    0.69  0.120 / 0.150
G23     297.0          29.1                8.4 +/-    2.60      15.0 +/-    2.60  0.120 / 0.100
G31     41.2           45.1                8.0 +/-    1.00      10.8 +/-    1.00  0.120 / 0.180
G32     87.8           14.5               10.1 +/-    3.68      25.5 +/-    3.68  0.070 / 0.130