PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-09:28:00
G07     344.0          61.3                5.0 +/-    0.51       5.6 +/-    0.51  0.070 / 0.060
G08     88.4           51.6                5.6 +/-    1.24       6.9 +/-    1.24  0.060 / 0.070
G09     181.3          67.0                8.5 +/-    0.30       9.2 +/-    0.30  0.040 / 0.030
G11     141.1          15.7                6.9 +/-    5.85      17.0 +/-    5.85  0.030 / 0.030
G23     157.3          39.1                7.4 +/-    0.64      11.0 +/-    0.64  0.070 / 0.080
G27     50.5           28.4                2.8 +/-    2.63       5.0 +/-    2.63  0.080 / 0.080
G28     241.2          33.3                5.9 +/-    0.87       9.7 +/-    0.87  0.040 / 0.040
G30     304.5          36.6                4.5 +/-    1.11       6.9 +/-    1.11  0.050 / 0.040