PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-19:58:10
G02     64.9           29.5                9.5 +/-    0.59      16.7 +/-    0.59  0.090 / 0.140
G05     49.9           54.3                8.4 +/-    0.51      10.1 +/-    0.51  0.050 / 0.170
G12     180.0          20.6               10.0 +/-    1.70      21.7 +/-    1.70  0.090 / 0.260
G13     121.0          20.7               12.5 +/-    1.17      27.1 +/-    1.17  0.110 / 0.250
G15     162.3          17.1               12.5 +/-    1.54      29.4 +/-    1.54  0.030 / 0.040
G21     277.6          21.3                9.2 +/-    2.04      19.5 +/-    2.04  0.020 / 0.040
G25     224.7          45.2               10.0 +/-    1.45      13.4 +/-    1.45  0.050 / 0.060
G29     332.5          61.3                9.1 +/-    0.88      10.3 +/-    0.88  0.040 / 0.080