PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/23-23:13:00
G02     69.4           26.5               10.1 +/-    0.93      19.1 +/-    0.93  0.060 / 0.110
G05     47.2           51.0                9.2 +/-    0.93      11.4 +/-    0.93  0.070 / 0.100
G12     181.3          16.8               12.9 +/-    1.89      30.7 +/-    1.89  0.030 / 0.040
G13     117.6          24.8               13.5 +/-    0.80      26.4 +/-    0.80  0.040 / 0.040
G15     158.1          22.3               14.8 +/-    1.17      30.9 +/-    1.17  0.030 / 0.040
G18     222.7          11.9                7.4 +/-   21.62      19.8 +/-   21.62  0.030 / 0.030
G20     220.1          77.8               14.3 +/-    0.95      14.6 +/-    0.95  0.050 / 0.160
G21     282.5          25.8               13.1 +/-    2.01      25.1 +/-    2.01  0.080 / 0.120
G25     214.9          38.0               14.0 +/-    1.37      21.0 +/-    1.37  0.040 / 0.050
G29     340.3          70.6               13.3 +/-    1.01      14.0 +/-    1.01  0.040 / 0.040