PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/10-14:12:40
G02     200.4          16.1               10.2 +/-    1.58      24.6 +/-    1.58  0.090 / 0.160
G06     173.0          49.6                8.9 +/-    0.66      11.3 +/-    0.66  0.090 / 0.160
G13     231.7          15.6                7.6 +/-    2.38      18.6 +/-    2.38  0.110 / 0.230
G17     21.9           60.5                8.2 +/-    0.49       9.2 +/-    0.49  0.100 / 0.280
G19     318.6          72.0                7.3 +/-    0.80       7.6 +/-    0.80  0.030 / 0.040
G24     313.2          25.7                7.5 +/-    3.00      14.5 +/-    3.00  0.030 / 0.040
G28     84.7           41.2                7.5 +/-    0.70      10.8 +/-    0.70  0.050 / 0.060
G30     157.0          19.1                8.8 +/-    2.64      19.9 +/-    2.64  0.040 / 0.050