PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-09:42:40
G02     85.0           11.2                5.0 +/-    2.53      13.5 +/-    2.53  0.050 / 0.120
G05     44.9           30.9                2.5 +/-    1.06       4.4 +/-    1.06  0.070 / 0.070
G13     99.4           33.6                6.7 +/-    0.67      11.0 +/-    0.67  0.040 / 0.040
G15     142.5          39.0                7.0 +/-    1.60      10.3 +/-    1.60  0.040 / 0.040
G20     291.4          83.3                4.0 +/-    0.79       4.0 +/-    0.79  0.200 / 0.130
G21     298.5          37.8                3.3 +/-    2.45       5.0 +/-    2.45  0.150 / 0.180
G25     209.6          25.8                6.6 +/-    1.78      12.6 +/-    1.78  0.050 / 0.120
G26     305.2          18.5                2.7 +/-    1.10       6.2 +/-    1.10  0.060 / 0.120
G29     48.4           86.6                5.8 +/-    0.58       5.8 +/-    0.58  0.220 / 0.160