PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/28-23:28:00
G10     264.5          38.0               11.0 +/-    1.95      16.6 +/-    1.95  0.230 / 0.280
G13     42.8           19.2                7.9 +/-    2.81      17.8 +/-    2.81  0.250 / 0.290
G15     61.9           50.5                9.9 +/-    0.81      12.4 +/-    0.81  0.040 / 0.040
G16     282.0          13.3                7.3 +/-    2.01      18.9 +/-    2.01  0.040 / 0.040
G20     292.5          58.7               10.8 +/-    1.23      12.4 +/-    1.23  0.100 / 0.360
G21     355.6          69.5               10.3 +/-    0.55      10.9 +/-    0.55  0.120 / 0.230
G24     123.5          12.6               12.1 +/-    2.90      31.8 +/-    2.90  0.040 / 0.050
G27     320.1          16.1                7.9 +/-    2.66      19.2 +/-    2.66  0.030 / 0.040
G29     166.5          33.7               12.3 +/-    1.54      20.0 +/-    1.54  0.100 / 0.400