PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-14:28:10
G01     69.4           32.5                6.9 +/-    1.12      11.5 +/-    1.12  0.070 / 0.190
G07     137.8          27.1                8.4 +/-    1.08      15.7 +/-    1.08  0.090 / 0.230
G11     52.1           27.4                5.9 +/-    2.63      10.8 +/-    2.63  0.060 / 0.110
G13     275.7          36.7                8.8 +/-    1.01      13.5 +/-    1.01  0.060 / 0.100
G15     304.2          14.4                5.9 +/-    1.67      15.0 +/-    1.67  0.030 / 0.030
G17     237.3          72.7                9.9 +/-    0.82      10.3 +/-    0.82  0.030 / 0.030
G19     225.1          45.0               10.1 +/-    2.19      13.7 +/-    2.19  0.080 / 0.100
G28     21.6           58.9                6.4 +/-    1.68       7.4 +/-    1.68  0.060 / 0.110
G30     135.5          63.1                8.2 +/-    0.54       9.0 +/-    0.54  0.030 / 0.030