PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-22:12:50
G02     55.1           37.7               10.0 +/-    0.99      15.1 +/-    0.99  0.040 / 0.060
G05     67.9           66.9                9.9 +/-    0.75      10.7 +/-    0.75  0.030 / 0.050
G12     184.9          34.7               14.0 +/-    1.34      22.4 +/-    1.34  0.120 / 0.400
G13     132.0          13.0               13.1 +/-    1.76      34.1 +/-    1.76  0.110 / 0.330
G20     205.0          58.2               13.2 +/-    0.76      15.2 +/-    0.76  0.030 / 0.050
G21     268.4          15.3               12.7 +/-    2.28      31.3 +/-    2.28  0.030 / 0.050
G25     233.0          53.1               11.3 +/-    1.16      13.7 +/-    1.16  0.040 / 0.090
G29     327.4          53.3                9.5 +/-    0.92      11.6 +/-    0.92  0.070 / 0.080