PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/11-16:27:50
G01     220.1          11.4                9.3 +/-    1.72      25.3 +/-    1.72  0.170 / 0.290
G03     252.6          71.5                8.3 +/-    0.65       8.7 +/-    0.65  0.150 / 0.350
G09     298.6          12.3                9.3 +/-    2.68      24.6 +/-    2.68  0.030 / 0.050
G14     93.8           18.3                9.3 +/-    1.55      21.4 +/-    1.55  0.040 / 0.040
G16     146.2          50.0               10.2 +/-    1.10      12.8 +/-    1.10  0.030 / 0.060
G22     196.7          61.0                8.0 +/-    1.43       9.0 +/-    1.43  0.040 / 0.070
G23     312.8          42.4                6.9 +/-    1.12       9.7 +/-    1.12  0.070 / 0.100
G26     89.2           56.4                8.4 +/-    0.98       9.8 +/-    0.98  0.070 / 0.100
G31     48.1           27.5                6.0 +/-    0.82      11.0 +/-    0.82  0.200 / 0.480