PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-00:42:30
G10     265.9          37.6               11.0 +/-    1.90      16.7 +/-    1.90  0.100 / 0.140
G13     42.3           19.0                8.2 +/-    1.30      18.4 +/-    1.30  0.110 / 0.130
G15     62.4           51.8                8.6 +/-    0.47      10.6 +/-    0.47  0.110 / 0.400
G16     278.5          12.6                9.2 +/-    1.95      24.1 +/-    1.95  0.130 / 0.330
G20     275.2          42.9                8.5 +/-    0.76      11.8 +/-    0.76  0.070 / 0.090
G21     357.7          70.7                9.8 +/-    0.55      10.3 +/-    0.55  0.070 / 0.070
G24     120.0          13.7               11.8 +/-    1.62      30.1 +/-    1.62  0.180 / 0.320
G27     319.1          17.9                8.2 +/-    1.82      19.0 +/-    1.82  0.190 / 0.390
G29     168.3          33.3               11.5 +/-    1.60      18.9 +/-    1.60  0.040 / 0.040