PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-06:12:50
G03     230.3          64.5                7.9 +/-    1.50       8.7 +/-    1.50  0.060 / 0.050
G09     307.8          25.2                4.4 +/-    1.38       8.6 +/-    1.38  0.050 / 0.050
G16     120.6          63.1                7.6 +/-    0.41       8.4 +/-    0.41  0.240 / 0.200
G22     191.7          49.7                8.8 +/-    0.68      11.1 +/-    0.68  0.240 / 0.170
G23     322.6          52.4                6.1 +/-    0.75       7.5 +/-    0.75  0.040 / 0.040
G26     63.8           51.0                6.5 +/-    0.68       8.1 +/-    0.68  0.040 / 0.040
G31     54.7           17.0                3.1 +/-    3.27       7.4 +/-    3.27  0.050 / 0.040