PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-22:43:00
G02     66.1           28.9                8.9 +/-    0.83      15.9 +/-    0.83  0.050 / 0.080
G05     49.7           55.4                9.0 +/-    0.39      10.7 +/-    0.39  0.050 / 0.080
G12     182.3          21.1               13.8 +/-    1.04      29.5 +/-    1.04  0.080 / 0.220
G13     121.4          22.0               13.8 +/-    0.89      28.8 +/-    0.89  0.080 / 0.190
G15     160.2          18.8               13.3 +/-    1.51      30.2 +/-    1.51  0.020 / 0.040
G20     214.2          73.0               14.2 +/-    0.66      14.7 +/-    0.66  0.030 / 0.040
G21     279.1          23.4               11.5 +/-    1.85      23.2 +/-    1.85  0.050 / 0.150
G25     218.0          41.8               13.8 +/-    1.42      19.5 +/-    1.42  0.080 / 0.140
G29     336.9          66.4               10.4 +/-    0.62      11.3 +/-    0.62  0.040 / 0.040