PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/28-23:28:00
G08     294.3          23.3               14.2 +/-    1.16      29.0 +/-    1.16  0.030 / 0.030
G10     0.2            62.9               11.5 +/-    0.84      12.8 +/-    0.84  0.030 / 0.020
G14     228.3          45.8               13.7 +/-    2.26      18.2 +/-    2.26  0.060 / 0.070
G18     60.4           52.4               11.6 +/-    0.95      14.2 +/-    0.95  0.040 / 0.070
G21     144.6          40.9               11.9 +/-    0.66      17.1 +/-    0.66  0.060 / 0.090
G24     59.6           27.6               10.8 +/-    1.97      19.9 +/-    1.97  0.080 / 0.080
G27     255.1          32.6               13.1 +/-    1.95      21.8 +/-    1.95  0.080 / 0.090
G32     240.1          62.4               11.8 +/-    1.18      13.2 +/-    1.18  0.090 / 0.090