PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/08-01:42:50
G02     223.8          69.3               12.1 +/-    0.71      12.8 +/-    0.71  0.050 / 0.040
G06     45.8           67.9                9.8 +/-    0.41      10.5 +/-    0.41  0.040 / 0.040
G12     320.4          42.4               10.2 +/-    1.11      14.2 +/-    1.11  0.030 / 0.030
G17     61.3           31.2                9.7 +/-    0.82      16.5 +/-    0.82  0.030 / 0.030
G19     47.3           44.8               10.4 +/-    1.02      14.0 +/-    1.02  0.050 / 0.100
G24     256.0          39.2               12.5 +/-    1.45      18.3 +/-    1.45  0.050 / 0.130