PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-18:12:30
G02     218.1          60.1                9.7 +/-    0.75      11.0 +/-    0.75  0.040 / 0.080
G06     52.3           70.8                9.5 +/-    0.40      10.0 +/-    0.40  0.040 / 0.070
G12     320.2          41.3                9.0 +/-    1.10      12.9 +/-    1.10  0.040 / 0.060
G17     59.1           31.0                9.5 +/-    1.09      16.3 +/-    1.09  0.050 / 0.060
G19     38.1           50.3                9.0 +/-    0.64      11.3 +/-    0.64  0.110 / 0.520
G24     261.1          41.3               11.7 +/-    1.45      16.6 +/-    1.45  0.070 / 0.550
G28     123.8          12.4               10.3 +/-    2.43      27.2 +/-    2.43  0.070 / 0.090