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               23.8 +/-    1.12      40.9 +/-    1.12  0.040 / 0.050
G13     48.7           26.2               15.9 +/-    2.15      30.3 +/-    2.15  0.040 / 0.050
G15     80.9           58.4               19.9 +/-    1.19      23.0 +/-    1.19  0.130 / 0.560
G16     288.2          15.4               17.5 +/-    3.43      43.1 +/-    3.43  0.130 / 0.450
G20     257.5          20.0               11.4 +/-    3.40      25.0 +/-    3.40  0.180 / 0.220
G21     339.4          63.4               20.0 +/-    0.87      22.1 +/-    0.87  0.090 / 0.250
G26     260.9          13.3               22.6 +/-    1.76      58.5 +/-    1.76  0.040 / 0.040
G29     166.6          44.9               21.0 +/-    0.91      28.4 +/-    0.91  0.030 / 0.040