PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-06:27:40
G10     304.7          54.0                5.4 +/-    1.10       6.5 +/-    1.10  0.040 / 0.040
G14     212.4          11.9                4.1 +/-    9.98      10.9 +/-    9.98  0.030 / 0.050
G15     45.6           23.9                2.7 +/-    1.05       5.4 +/-    1.05  0.120 / 0.520
G20     42.9           55.3                4.6 +/-    0.73       5.4 +/-    0.73  0.100 / 0.570
G21     109.7          71.2                7.2 +/-    0.65       7.6 +/-    0.65  0.050 / 0.030
G24     91.8           28.1                5.1 +/-    1.08       9.2 +/-    1.08  0.040 / 0.040
G27     294.4          36.2                6.7 +/-    0.82      10.4 +/-    0.82  0.080 / 0.100
G32     212.6          38.7                8.1 +/-    1.06      12.0 +/-    1.06  0.060 / 0.070