PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-08:58:10
G02     221.3          64.7                6.1 +/-    0.54       6.7 +/-    0.54  0.040 / 0.050
G06     48.9           71.2                5.3 +/-    0.41       5.6 +/-    0.41  0.040 / 0.040
G12     319.7          40.4                4.2 +/-    0.72       6.1 +/-    0.72  0.040 / 0.050
G17     62.9           26.8                2.9 +/-    1.06       5.5 +/-    1.06  0.040 / 0.050
G19     42.5           47.7                3.7 +/-    0.28       4.8 +/-    0.28  0.050 / 0.080
G28     125.3          11.6                6.7 +/-    2.40      18.0 +/-    2.40  0.050 / 0.080