PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/23-05:28:10
G07     334.5          58.7                5.9 +/-    0.46       6.8 +/-    0.46  0.060 / 0.060
G08     95.4           51.1                9.3 +/-    0.91      11.6 +/-    0.91  0.060 / 0.060
G09     178.7          69.6                7.7 +/-    0.63       8.2 +/-    0.63  0.080 / 0.120
G11     144.5          13.7                5.3 +/-    1.68      13.5 +/-    1.68  0.080 / 0.090
G23     156.2          43.8                8.0 +/-    0.75      10.9 +/-    0.75  0.030 / 0.040
G27     56.7           33.0                4.5 +/-    1.30       7.4 +/-    1.30  0.040 / 0.030
G28     236.6          28.0                7.3 +/-    1.36      13.3 +/-    1.36  0.040 / 0.050
G30     300.8          33.5                4.3 +/-    0.97       7.0 +/-    0.97  0.050 / 0.060