PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-07:28:10
G08     292.3          23.1                5.6 +/-    1.62      11.4 +/-    1.62  0.030 / 0.020
G10     12.9           62.8                3.2 +/-    1.15       3.5 +/-    1.15  0.040 / 0.030
G14     230.5          48.2                4.7 +/-    2.64       6.1 +/-    2.64  0.040 / 0.080
G18     317.8          12.4                0.0 +/-    8.82       0.0 +/-    8.82  0.040 / 0.080
G20     67.3           51.4                4.4 +/-    1.27       5.4 +/-    1.27  0.110 / 0.100
G21     147.1          38.1                6.3 +/-    0.61       9.5 +/-    0.61  0.140 / 0.150
G24     54.4           24.4                3.6 +/-    2.40       7.2 +/-    2.40  0.100 / 0.140
G27     254.6          31.4                4.3 +/-    1.95       7.3 +/-    1.95  0.080 / 0.130
G32     244.5          64.7                6.6 +/-    0.59       7.2 +/-    0.59  0.080 / 0.100