PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-12:42:40
G01     224.9          15.5                6.2 +/-    2.50      15.3 +/-    2.50  0.080 / 0.140
G03     277.7          69.8                6.5 +/-    0.93       6.9 +/-    0.93  0.090 / 0.150
G14     86.5           26.9                5.9 +/-    1.75      11.0 +/-    1.75  0.030 / 0.030
G16     142.3          48.1                8.7 +/-    1.10      11.2 +/-    1.10  0.030 / 0.040
G22     200.7          66.6                7.2 +/-    0.51       7.8 +/-    0.51  0.220 / 0.210
G23     311.9          42.8                5.5 +/-    1.05       7.7 +/-    1.05  0.180 / 0.340
G26     89.7           53.7                6.4 +/-    0.65       7.7 +/-    0.65  0.030 / 0.030
G31     46.7           28.2                4.8 +/-    2.10       8.7 +/-    2.10  0.030 / 0.030