PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/09-07:28:10
G02     201.6          26.7                6.3 +/-    2.38      11.9 +/-    2.38  0.050 / 0.040
G06     168.9          60.3               10.8 +/-    1.14      12.2 +/-    1.14  0.040 / 0.040
G17     31.9           52.4                6.7 +/-    0.80       8.3 +/-    0.80  0.250 / 0.410
G19     335.8          69.3                9.1 +/-    0.81       9.7 +/-    0.81  0.300 / 0.360
G24     301.3          37.8                9.7 +/-    1.00      14.7 +/-    1.00  0.070 / 0.070
G28     93.9           37.5                9.6 +/-    0.84      14.5 +/-    0.84  0.070 / 0.090
G30     158.2          9.7                 8.1 +/-    3.74      22.6 +/-    3.74  0.030 / 0.050