PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/05-09:27:40
G10     304.4          53.8                5.3 +/-    0.67       6.3 +/-    0.67  0.180 / 0.620
G14     212.2          13.4                3.0 +/-    1.98       7.8 +/-    1.98  0.150 / 0.550
G15     45.5           23.0                1.4 +/-    2.36       2.9 +/-    2.36  0.050 / 0.080
G20     65.1           34.3                4.1 +/-    0.68       6.5 +/-    0.68  0.070 / 0.060
G21     110.6          70.3                5.3 +/-    0.79       5.6 +/-    0.79  0.120 / 0.180
G24     92.5           28.2                4.1 +/-    1.39       7.5 +/-    1.39  0.120 / 0.150
G27     294.1          36.4                7.3 +/-    2.18      11.3 +/-    2.18  0.030 / 0.030
G32     212.7          38.2                7.9 +/-    1.40      11.8 +/-    1.40  0.030 / 0.030