PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/26-20:12:30
G01     224.9          15.5               12.2 +/-    2.11      29.9 +/-    2.11  0.040 / 0.050
G03     276.9          70.0                8.7 +/-    0.82       9.2 +/-    0.82  0.040 / 0.040
G14     88.3           23.6               10.0 +/-    0.97      20.2 +/-    0.97  0.070 / 0.100
G16     147.1          46.6               11.4 +/-    1.05      15.0 +/-    1.05  0.060 / 0.100
G22     210.1          68.7               11.3 +/-    0.67      12.0 +/-    0.67  0.030 / 0.070
G23     309.3          39.3                9.7 +/-    0.93      14.2 +/-    0.93  0.040 / 0.070
G26     93.7           54.6                9.1 +/-    0.67      10.8 +/-    0.67  0.120 / 0.170
G31     46.0           30.5                7.2 +/-    0.27      12.5 +/-    0.27  0.170 / 0.250