PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-19:12:40
G02     348.1          76.9               10.2 +/-    0.72      10.4 +/-    0.72  0.060 / 0.110
G05     166.2          35.5               13.8 +/-    1.24      21.7 +/-    1.24  0.060 / 0.080
G06     43.3           35.7                8.0 +/-    1.18      12.5 +/-    1.18  0.080 / 0.200
G12     298.2          76.5                7.9 +/-    0.97       8.1 +/-    0.97  0.110 / 0.230
G19     80.9           22.5                7.6 +/-    2.21      15.8 +/-    2.21  0.020 / 0.040
G24     226.2          19.9               10.9 +/-    1.94      24.1 +/-    1.94  0.020 / 0.040
G25     315.3          38.1                9.9 +/-    2.79      14.9 +/-    2.79  0.050 / 0.090
G29     290.8          13.4               12.4 +/-    2.96      32.1 +/-    2.96  0.040 / 0.090