PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-04:12:30
G08     292.7          23.5                5.5 +/-    1.57      11.1 +/-    1.57  0.040 / 0.040
G10     2.5            63.0                4.7 +/-    0.64       5.3 +/-    0.64  0.040 / 0.040
G14     229.4          47.3                6.8 +/-    1.59       8.9 +/-    1.59  0.070 / 0.080
G18     59.8           53.3                3.9 +/-    1.78       4.7 +/-    1.78  0.050 / 0.080
G21     145.5          41.6                7.8 +/-    0.56      11.0 +/-    0.56  0.130 / 0.140
G24     58.3           27.1                4.9 +/-    0.85       9.2 +/-    0.85  0.090 / 0.260
G27     253.7          31.9                6.9 +/-    1.80      11.6 +/-    1.80  0.060 / 0.090
G32     243.9          66.2                6.8 +/-    0.79       7.4 +/-    0.79  0.080 / 0.100