PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-16:27:40
G02     200.6          15.7               11.1 +/-    1.51      27.1 +/-    1.51  0.160 / 0.160
G06     169.8          51.7               10.5 +/-    0.59      12.9 +/-    0.59  0.120 / 0.180
G13     229.5          15.3               10.1 +/-    2.02      25.1 +/-    2.02  0.120 / 0.140
G17     18.2           62.3                8.1 +/-    0.85       9.1 +/-    0.85  0.080 / 0.100
G19     301.2          70.1                7.2 +/-    0.70       7.6 +/-    0.70  0.150 / 0.350
G24     311.4          28.3                6.1 +/-    1.53      11.0 +/-    1.53  0.310 / 0.480
G28     83.9           41.7                9.3 +/-    1.23      13.2 +/-    1.23  0.050 / 0.050
G30     157.1          18.7               10.8 +/-    2.41      24.4 +/-    2.41  0.040 / 0.050