PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-09:28:10
G02     33.9           55.2                2.0 +/-    1.10       2.4 +/-    1.10  0.030 / 0.030
G05     141.1          60.8                6.0 +/-    0.64       6.8 +/-    0.64  0.030 / 0.030
G06     51.7           21.0                2.2 +/-    2.20       4.7 +/-    2.20  0.020 / 0.030
G12     206.9          70.8                5.2 +/-    0.45       5.4 +/-    0.45  0.030 / 0.030
G19     99.1           10.2                6.9 +/-    2.07      19.2 +/-    2.07  0.150 / 0.180
G20     199.9          21.2                4.0 +/-    1.49       8.5 +/-    1.49  0.150 / 0.270
G25     299.9          52.0                5.0 +/-    1.54       6.1 +/-    1.54  0.160 / 0.210
G29     307.4          29.0                3.2 +/-    0.99       5.8 +/-    0.99  0.120 / 0.250