PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-14:27:30
G02     201.5          24.5               11.6 +/-    3.57      22.9 +/-    3.57  0.180 / 0.300
G06     169.4          59.2               12.4 +/-    1.08      14.2 +/-    1.08  0.170 / 0.360
G13     225.3          9.9                10.3 +/-    2.99      28.8 +/-    2.99  0.070 / 0.120
G17     30.8           53.6                9.8 +/-    1.14      11.8 +/-    1.14  0.070 / 0.120
G19     346.3          69.1                9.7 +/-    0.76      10.3 +/-    0.76  0.060 / 0.040
G24     307.6          31.9                8.1 +/-    0.86      13.6 +/-    0.86  0.050 / 0.050
G28     94.3           36.2               10.1 +/-    1.00      15.7 +/-    1.00  0.040 / 0.050
G30     158.0          11.0               10.4 +/-    2.67      28.5 +/-    2.67  0.040 / 0.040