PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/06-14:57:20
G02     215.0          52.1                9.6 +/-    1.21      11.8 +/-    1.21  0.080 / 0.070
G06     64.5           75.6                9.3 +/-    0.52       9.6 +/-    0.52  0.050 / 0.070
G12     318.7          37.1                8.0 +/-    0.99      12.2 +/-    0.99  0.070 / 0.060
G17     55.7           33.1                7.8 +/-    1.51      12.9 +/-    1.51  0.070 / 0.050
G19     29.7           54.4                8.6 +/-    1.86      10.3 +/-    1.86  0.030 / 0.020
G24     266.4          42.7                9.1 +/-    1.60      12.6 +/-    1.60  0.030 / 0.040
G28     120.3          16.6                7.8 +/-    1.08      18.7 +/-    1.08  0.040 / 0.030