PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/31-18:13:00
G03     188.5          19.0               12.6 +/-    1.47      28.5 +/-    1.47  0.110 / 0.160
G07     289.8          36.9               11.7 +/-    1.51      18.0 +/-    1.51  0.100 / 0.160
G08     146.0          26.2               14.3 +/-    0.84      27.1 +/-    0.84  0.020 / 0.030
G09     320.2          61.7                9.7 +/-    1.63      10.9 +/-    1.63  0.030 / 0.030
G16     42.7           38.3               10.1 +/-    1.09      15.0 +/-    1.09  0.070 / 0.070
G23     118.5          76.0               10.0 +/-    0.75      10.3 +/-    0.75  0.050 / 0.080
G26     43.5           10.4                8.7 +/-    2.41      24.1 +/-    2.41  0.060 / 0.070
G27     98.9           33.7               10.8 +/-    1.20      17.6 +/-    1.20  0.070 / 0.080