PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-22:12:50
G10     297.0          51.8                9.2 +/-    1.41      11.4 +/-    1.41  0.060 / 0.110
G14     210.2          10.6                0.2 +/-   33.70       0.6 +/-   33.70  0.060 / 0.100
G15     47.1           33.8                7.9 +/-    0.75      12.9 +/-    0.75  0.040 / 0.040
G20     351.4          65.4                6.9 +/-    1.05       7.5 +/-    1.05  0.030 / 0.040
G21     94.8           74.4               10.4 +/-    0.93      10.7 +/-    0.93  0.080 / 0.180
G24     95.3           26.1               11.4 +/-    0.67      21.7 +/-    0.67  0.080 / 0.130
G27     301.8          33.4                9.4 +/-    1.01      15.4 +/-    1.01  0.270 / 0.670
G32     210.1          32.7               11.7 +/-    1.29      19.5 +/-    1.29  0.220 / 0.490