PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-13:12:30
G02     201.5          26.5                5.8 +/-    1.61      10.9 +/-    1.61  0.110 / 0.090
G06     169.7          60.0                6.7 +/-    1.01       7.6 +/-    1.01  0.110 / 0.110
G17     31.7           52.8                4.6 +/-    1.26       5.6 +/-    1.26  0.040 / 0.030
G19     349.2          68.6                3.6 +/-    0.72       3.9 +/-    0.72  0.060 / 0.040
G24     306.6          32.7                2.0 +/-    2.29       3.3 +/-    2.29  0.040 / 0.030
G28     95.6           35.4                5.6 +/-    1.69       8.9 +/-    1.69  0.040 / 0.030