PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/14-22:57:30
G10     255.6          30.8               13.2 +/-    1.62      22.8 +/-    1.62  0.040 / 0.050
G13     48.7           26.3                9.0 +/-    1.40      17.0 +/-    1.40  0.040 / 0.040
G15     80.3           58.1                9.6 +/-    0.55      11.1 +/-    0.55  0.160 / 0.390
G16     288.3          15.4                8.2 +/-    2.22      20.1 +/-    2.22  0.160 / 0.460
G20     259.6          25.7                7.5 +/-    1.02      14.4 +/-    1.02  0.070 / 0.200
G21     339.6          63.5                9.0 +/-    0.41      10.0 +/-    0.41  0.090 / 0.170
G26     261.0          13.3               10.9 +/-    2.20      28.2 +/-    2.20  0.020 / 0.050
G29     166.6          44.8               11.0 +/-    0.61      14.9 +/-    0.61  0.030 / 0.050