PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-20:58:00
G10     275.5          42.2               21.0 +/-    1.09      29.5 +/-    1.09  0.040 / 0.050
G13     39.5           13.6               16.3 +/-    1.33      41.9 +/-    1.33  0.030 / 0.050
G15     52.3           42.3               19.6 +/-    0.73      27.6 +/-    0.73  0.090 / 0.330
G18     320.1          66.5               19.9 +/-    1.15      21.5 +/-    1.15  0.130 / 0.320
G20     59.9           29.2               19.5 +/-    1.20      34.7 +/-    1.20  0.130 / 0.340
G21     36.5           76.0               22.5 +/-    0.78      23.1 +/-    0.78  0.140 / 0.270
G24     114.9          18.5               23.9 +/-    1.00      54.6 +/-    1.00  0.070 / 0.290
G27     313.3          26.0               20.2 +/-    1.14      38.5 +/-    1.14  0.080 / 0.240
G29     166.4          18.5               24.5 +/-    1.64      55.9 +/-    1.64  0.070 / 0.160
G32     206.7          13.6               22.3 +/-    3.98      57.4 +/-    3.98  0.080 / 0.140