PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/25-22:12:30
G10     255.6          30.8               25.5 +/-    1.41      43.9 +/-    1.41  0.050 / 0.060
G13     48.7           26.2               16.7 +/-    1.21      31.7 +/-    1.21  0.040 / 0.050
G15     80.9           58.4               19.2 +/-    1.04      22.2 +/-    1.04  0.070 / 0.190
G16     288.2          15.4               17.7 +/-    2.48      43.7 +/-    2.48  0.080 / 0.160
G20     257.5          20.0               11.3 +/-    1.36      24.8 +/-    1.36  0.130 / 0.560
G21     339.4          63.4               17.9 +/-    0.67      19.7 +/-    0.67  0.160 / 0.420
G26     260.9          13.3               23.3 +/-    2.96      60.4 +/-    2.96  0.020 / 0.030
G29     166.6          44.9               20.6 +/-    0.68      27.8 +/-    0.68  0.030 / 0.040