PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-05:12:40
G02     227.5          72.2                6.7 +/-    0.48       7.0 +/-    0.48  0.180 / 0.290
G05     173.5          11.3               -1.4 +/-   16.23      -3.7 +/-   16.23  0.220 / 0.360
G06     43.9           67.7                5.6 +/-    0.73       6.0 +/-    0.73  0.070 / 0.070
G12     320.7          43.9                4.3 +/-    0.77       5.9 +/-    0.77  0.070 / 0.110
G17     65.0           27.5                2.7 +/-    0.98       4.9 +/-    0.98  0.030 / 0.020
G19     50.8           42.5                5.0 +/-    2.09       6.9 +/-    2.09  0.030 / 0.020
G24     253.8          38.2                5.3 +/-    1.63       8.0 +/-    1.63  0.050 / 0.060