PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-14:13:00
G02     47.3           42.9                6.7 +/-    1.49       9.3 +/-    1.49  0.030 / 0.020
G05     103.2          70.1                9.4 +/-    0.40       9.9 +/-    0.40  0.030 / 0.020
G12     190.9          51.7               11.8 +/-    0.39      14.6 +/-    0.39  0.070 / 0.080
G20     202.0          40.7               12.2 +/-    0.61      17.6 +/-    0.61  0.060 / 0.090
G25     266.0          58.8                6.7 +/-    1.18       7.7 +/-    1.18  0.040 / 0.030
G29     321.2          45.1                6.4 +/-    0.68       8.6 +/-    0.68  0.040 / 0.040