PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/03-20:27:50
G02     73.0           22.6               16.8 +/-    1.18      34.8 +/-    1.18  0.080 / 0.150
G05     46.3           50.9               19.0 +/-    0.98      23.7 +/-    0.98  0.080 / 0.140
G12     181.4          15.0               31.9 +/-    3.62      79.2 +/-    3.62  0.130 / 0.230
G13     115.2          26.7               22.7 +/-    0.95      42.7 +/-    0.95  0.090 / 0.150
G15     154.7          25.9               29.3 +/-    2.83      56.0 +/-    2.83  0.060 / 0.120
G18     224.1          15.7               32.8 +/-    3.21      80.2 +/-    3.21  0.080 / 0.170
G20     227.6          80.0               23.1 +/-    0.55      23.4 +/-    0.55  0.030 / 0.040
G21     285.6          28.5               22.4 +/-    2.03      40.4 +/-    2.03  0.020 / 0.040
G25     213.7          35.7               25.9 +/-    1.48      40.5 +/-    1.48  0.040 / 0.040
G29     347.6          75.3               22.4 +/-    0.54      23.1 +/-    0.54  0.040 / 0.040