PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-22:27:30
G10     296.1          51.5               11.1 +/-    2.11      13.7 +/-    2.11  0.050 / 0.100
G15     47.2           34.4               10.0 +/-    0.92      16.0 +/-    0.92  0.060 / 0.090
G20     349.8          65.4               10.8 +/-    0.44      11.7 +/-    0.44  0.080 / 0.140
G21     92.4           74.8               11.7 +/-    0.65      12.1 +/-    0.65  0.080 / 0.120
G24     96.1           25.9               13.4 +/-    2.21      25.6 +/-    2.21  0.030 / 0.040
G27     302.4          33.2                8.9 +/-    3.30      14.6 +/-    3.30  0.040 / 0.030
G32     209.9          32.2               12.3 +/-    1.32      20.6 +/-    1.32  0.060 / 0.060