PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-15:13:10
G01     223.8          14.4               -8.4 +/-   35.79     -21.2 +/-   35.79  0.130 / 0.200
G03     267.6          71.3               10.0 +/-    0.72      10.5 +/-    0.72  0.130 / 0.190
G14     88.7           24.6                9.2 +/-    1.39      18.2 +/-    1.39  0.060 / 0.070
G16     141.7          49.4               10.5 +/-    0.68      13.4 +/-    0.68  0.050 / 0.070
G22     198.3          64.9               10.5 +/-    0.48      11.5 +/-    0.48  0.040 / 0.050
G23     312.8          43.5                8.3 +/-    0.95      11.4 +/-    0.95  0.040 / 0.050
G26     87.3           53.9                8.7 +/-    0.79      10.5 +/-    0.79  0.040 / 0.050
G31     47.3           27.3                6.7 +/-    1.66      12.4 +/-    1.66  0.040 / 0.040