PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/14-08:12:40
G08     314.5          16.5                4.5 +/-    3.40      10.8 +/-    3.40  0.040 / 0.040
G10     322.0          58.5                4.0 +/-    0.38       4.6 +/-    0.38  0.040 / 0.040
G14     214.5          25.5                6.2 +/-    1.73      12.0 +/-    1.73  0.050 / 0.070
G15     46.0           14.6                1.0 +/-    2.11       2.5 +/-    2.11  0.060 / 0.070
G20     25.4           62.5                4.3 +/-    1.64       4.8 +/-    1.64  0.040 / 0.030
G21     127.3          61.0                5.7 +/-    0.46       6.5 +/-    0.46  0.040 / 0.020
G24     80.2           29.5                5.5 +/-    0.89       9.8 +/-    0.89  0.080 / 0.080
G27     285.3          37.2                4.1 +/-    0.71       6.3 +/-    0.71  0.090 / 0.080
G32     218.4          40.3                8.2 +/-    1.82      11.9 +/-    1.82  0.120 / 0.200