PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/16-01:58:00
G01     256.2          37.4                4.5 +/-    1.16       6.8 +/-    1.16  0.030 / 0.050
G03     316.4          37.7                2.8 +/-    0.94       4.3 +/-    0.94  0.040 / 0.050
G11     239.7          15.3                4.5 +/-    2.22      11.1 +/-    2.22  0.030 / 0.040
G14     56.7           42.4                2.8 +/-    0.51       3.9 +/-    0.51  0.020 / 0.040
G22     309.6          61.0                3.3 +/-    0.69       3.7 +/-    0.69  0.160 / 0.300
G23     282.7          15.3                1.2 +/-   10.32       2.9 +/-   10.32  0.130 / 0.310
G25     41.6           11.3                4.0 +/-    1.77      10.8 +/-    1.77  0.070 / 0.110
G26     145.2          32.3                6.3 +/-    1.54      10.5 +/-    1.54  0.060 / 0.090
G31     41.8           67.4                2.7 +/-    0.85       2.9 +/-    0.85  0.050 / 0.100
G32     72.1           28.2                1.8 +/-    0.46       3.3 +/-    0.46  0.060 / 0.090