PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-19:43:10
G02     70.6           24.2               11.6 +/-    1.84      23.1 +/-    1.84  0.090 / 0.080
G05     47.5           53.0               11.6 +/-    0.67      14.1 +/-    0.67  0.080 / 0.080
G12     182.3          18.2               12.9 +/-    2.36      29.7 +/-    2.36  0.080 / 0.120
G13     118.2          24.6               15.6 +/-    1.39      30.7 +/-    1.39  0.100 / 0.150
G15     156.3          23.3               14.5 +/-    2.85      29.5 +/-    2.85  0.040 / 0.040
G18     222.7          13.1               12.3 +/-    4.76      32.0 +/-    4.76  0.050 / 0.030
G20     220.7          76.4               13.3 +/-    0.61      13.6 +/-    0.61  0.030 / 0.040
G21     283.1          26.9               12.7 +/-    1.22      23.8 +/-    1.22  0.040 / 0.040
G25     216.6          38.8               13.9 +/-    1.83      20.7 +/-    1.83  0.080 / 0.280
G29     344.3          72.4               11.8 +/-    0.36      12.4 +/-    0.36  0.150 / 0.180