PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-01:58:00
G10     266.0          36.7               12.3 +/-    1.32      18.8 +/-    1.32  0.170 / 0.400
G13     42.8           20.2                8.7 +/-    1.99      19.0 +/-    1.99  0.200 / 0.330
G15     62.5           51.9                9.1 +/-    0.91      11.3 +/-    0.91  0.100 / 0.070
G16     281.1          11.7               12.4 +/-    1.76      33.2 +/-    1.76  0.130 / 0.080
G18     296.0          63.0               10.4 +/-    0.60      11.6 +/-    0.60  0.040 / 0.030
G20     54.8           33.8                8.1 +/-    1.64      13.1 +/-    1.64  0.040 / 0.030
G21     360.0          71.4               10.6 +/-    0.34      11.1 +/-    0.34  0.220 / 0.270
G24     122.1          13.4               12.2 +/-    1.87      31.5 +/-    1.87  0.190 / 0.300
G27     318.1          19.7                9.1 +/-    1.68      20.2 +/-    1.68  0.070 / 0.080
G29     167.4          30.2               12.0 +/-    0.88      20.9 +/-    0.88  0.070 / 0.100