PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-01:12:50
G10     247.4          23.0               15.0 +/-    1.30      30.8 +/-    1.30  0.090 / 0.320
G13     58.2           33.1               10.1 +/-    1.09      16.6 +/-    1.09  0.090 / 0.310
G15     99.8           58.7               11.1 +/-    1.17      12.7 +/-    1.17  0.110 / 0.130
G16     300.7          14.7                5.5 +/-    2.33      13.8 +/-    2.33  0.090 / 0.110
G18     262.4          52.1               12.4 +/-    2.23      15.2 +/-    2.23  0.030 / 0.040
G20     41.2           50.3                9.4 +/-    0.86      11.8 +/-    0.86  0.030 / 0.050
G21     328.4          57.5               10.7 +/-    0.67      12.4 +/-    0.67  0.130 / 0.180
G26     272.9          16.9               12.6 +/-    2.48      30.0 +/-    2.48  0.130 / 0.250
G29     163.2          52.3               12.4 +/-    0.61      15.2 +/-    0.61  0.030 / 0.050