PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-18:12:30
G08     294.0          22.7               10.8 +/-    0.99      22.3 +/-    0.99  0.100 / 0.100
G10     4.8            63.0                8.0 +/-    0.64       8.9 +/-    0.64  0.120 / 0.090
G14     229.7          46.1               12.2 +/-    2.03      16.2 +/-    2.03  0.080 / 0.120
G18     64.7           50.1                9.4 +/-    0.98      11.9 +/-    0.98  0.100 / 0.110
G21     145.0          35.1               12.8 +/-    0.69      20.3 +/-    0.69  0.080 / 0.090
G24     57.5           26.6                8.5 +/-    1.70      16.1 +/-    1.70  0.070 / 0.090
G27     253.4          31.7                9.5 +/-    2.84      16.1 +/-    2.84  0.040 / 0.020
G32     244.7          66.4               10.3 +/-    0.91      11.1 +/-    0.91  0.040 / 0.020