PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/11-19:57:40
G10     255.3          29.6               27.7 +/-    2.27      48.9 +/-    2.27  0.100 / 0.230
G13     50.0           28.1               19.0 +/-    0.84      34.6 +/-    0.84  0.150 / 0.300
G15     75.6           55.5               25.0 +/-    0.67      29.6 +/-    0.67  0.050 / 0.060
G16     294.9          13.4               17.3 +/-    1.08      44.7 +/-    1.08  0.050 / 0.050
G18     278.6          59.7               26.0 +/-    1.61      29.6 +/-    1.61  0.130 / 0.380
G20     46.2           44.4               21.7 +/-    1.23      29.6 +/-    1.23  0.180 / 0.340
G21     344.9          65.5               22.2 +/-    0.86      24.2 +/-    0.86  0.050 / 0.070
G26     267.6          13.1               21.9 +/-    1.34      57.0 +/-    1.34  0.050 / 0.070
G27     321.9          10.8               -7.4 +/-   39.20     -20.4 +/-   39.20  0.080 / 0.310
G29     163.8          38.6               29.2 +/-    0.64      43.4 +/-    0.64  0.090 / 0.270