PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/04-05:43:00
G10     276.1          44.0                3.9 +/-    1.06       5.4 +/-    1.06  0.110 / 0.120
G13     38.7           11.6                3.3 +/-    3.07       8.9 +/-    3.07  0.110 / 0.130
G15     51.9           41.4                4.1 +/-    0.67       5.8 +/-    0.67  0.070 / 0.060
G20     313.8          63.2                4.1 +/-    0.61       4.6 +/-    0.61  0.070 / 0.070
G21     31.9           75.7                3.4 +/-    0.47       3.5 +/-    0.47  0.040 / 0.040
G24     113.3          18.6                6.1 +/-    0.95      13.9 +/-    0.95  0.040 / 0.040
G27     315.5          23.4                2.4 +/-    1.50       4.8 +/-    1.50  0.190 / 0.410
G29     166.3          20.2                5.7 +/-    0.94      12.4 +/-    0.94  0.170 / 0.490
G32     206.4          12.3                3.9 +/-    2.10      10.5 +/-    2.10  0.110 / 0.200