PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/14-15:43:10
G02     31.2           57.4               11.0 +/-    0.65      12.8 +/-    0.65  0.050 / 0.050
G05     149.1          58.6               15.3 +/-    0.63      17.6 +/-    0.63  0.040 / 0.040
G06     52.1           19.6                8.1 +/-    0.79      17.9 +/-    0.79  0.030 / 0.030
G12     205.9          70.9               13.5 +/-    1.00      14.2 +/-    1.00  0.030 / 0.040
G20     198.3          23.5               16.1 +/-    1.26      32.5 +/-    1.26  0.090 / 0.210
G25     298.5          53.6               13.2 +/-    0.89      16.0 +/-    0.89  0.090 / 0.230
G29     308.2          30.7               10.2 +/-    0.87      17.6 +/-    0.87  0.070 / 0.180