PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/12-11:12:30
G02     201.4          18.6                6.1 +/-    1.74      13.8 +/-    1.74  0.170 / 0.310
G06     169.6          55.0                7.7 +/-    0.89       9.2 +/-    0.89  0.190 / 0.350
G13     226.4          12.8                4.3 +/-    8.40      11.4 +/-    8.40  0.070 / 0.100
G17     25.2           57.7                6.2 +/-    1.18       7.2 +/-    1.18  0.080 / 0.100
G19     311.3          70.1                5.6 +/-    0.68       5.9 +/-    0.68  0.030 / 0.030
G24     307.7          32.7                4.3 +/-    1.39       7.1 +/-    1.39  0.030 / 0.040
G28     87.7           40.4                6.4 +/-    1.66       9.3 +/-    1.66  0.040 / 0.030
G30     157.8          15.6                5.7 +/-    1.21      14.0 +/-    1.21  0.040 / 0.030