PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-14:43:10
G02     204.2          35.6               11.8 +/-    1.16      18.5 +/-    1.16  0.120 / 0.310
G06     158.4          71.0                8.0 +/-    1.06       8.4 +/-    1.06  0.150 / 0.200
G12     309.0          16.9                7.0 +/-    1.99      16.7 +/-    1.99  0.040 / 0.050
G17     40.6           45.4                5.7 +/-    0.72       7.6 +/-    0.72  0.030 / 0.040
G19     10.8           62.8                6.9 +/-    0.66       7.7 +/-    0.66  0.040 / 0.050
G24     297.3          38.1                9.3 +/-    1.32      14.0 +/-    1.32  0.030 / 0.060
G28     105.2          29.2                6.9 +/-    1.15      12.2 +/-    1.15  0.080 / 0.170