PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-09:43:00
G10     306.3          54.4                4.3 +/-    1.09       5.2 +/-    1.09  0.190 / 0.680
G14     212.5          14.7                5.0 +/-    3.22      12.6 +/-    3.22  0.200 / 0.530
G15     45.5           21.9                3.1 +/-    0.65       6.5 +/-    0.65  0.070 / 0.130
G20     67.1           32.0                5.5 +/-    0.58       9.3 +/-    0.58  0.080 / 0.120
G21     113.4          69.2                8.1 +/-    0.56       8.6 +/-    0.56  0.060 / 0.080
G24     91.1           28.5                5.3 +/-    0.51       9.7 +/-    0.51  0.060 / 0.090
G27     292.6          36.7                6.7 +/-    1.38      10.3 +/-    1.38  0.030 / 0.050
G32     213.4          39.4                8.2 +/-    1.11      12.0 +/-    1.11  0.030 / 0.050